Gridview为什么所有可见行都设置为脏?

发布于 2024-11-04 04:37:04 字数 9063 浏览 3 评论 0原文

我正在使用 BulkEditGridView 控件,如 http://roohit.com/site/showArc 所讨论的。 php?shid=bbb62,它非常适合我的需求。我遇到的问题是,每当我保存时,每个可见行(我启用了分页)都会更新。单步执行代码,当我单击“保存”按钮时,我发现 grid.DirtyRows.Count 等于每页的项目数减 1。

我找不到哪里行被设置为脏。有什么建议我可以在哪里查看吗?

我的代码隐藏只有这个:

using System;
using System.Web.UI.WebControls;
using System.Collections.Generic;
using System.Collections;
using System.Data.Common;

public partial class MSDS_MSDS_Admin_GridUpdate : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            gridMSDS.DataKeyNames = new String[] { "id" };
            gridMSDS.DataBind();
        }
    }
}

编辑:这是 aspx 代码。

<%@ Page Language="C#" MasterPageFile="~/MSDS/MSDS.master" AutoEventWireup="true" EnableEventValidation="false" CodeFile="GridUpdate.aspx.cs" Inherits="MSDS_MSDS_Admin_GridUpdate" Title="Untitled Page" %>

<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="cc1" %>
<%@ Register Assembly="RealWorld.Grids" Namespace="RealWorld.Grids" TagPrefix="cc2" %>
<asp:Content ID="Content1" ContentPlaceHolderID="PageContent" runat="Server">
    <br />
    <asp:Button ID="btnSave" runat="server" Text="Save" Width="100%" />
    <cc2:BulkEditGridView ID="gridMSDS" runat="server" AllowPaging="True" AllowSorting="True"
        DataSourceID="sqlData" EnableInsert="False" InsertRowCount="1" PageSize="20"
        SaveButtonID="btnSave" AutoGenerateColumns="False">
        <Columns>
            <asp:BoundField DataField="ID" HeaderText="ID" InsertVisible="False" Visible="false"
                ReadOnly="True" SortExpression="ID" />
            <asp:BoundField DataField="ChemicalTitle" HeaderText="ChemicalTitle" SortExpression="ChemicalTitle" />
            <asp:TemplateField HeaderText="SheetDate" SortExpression="SheetDate">
                <EditItemTemplate>
                    <asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("SheetDate") %>' Width="85px"></asp:TextBox>
                    <cc1:CalendarExtender ID="TextBox1_CalendarExtender" runat="server" Enabled="True"
                        TargetControlID="TextBox1">
                    </cc1:CalendarExtender>
                </EditItemTemplate>
                <ItemTemplate>
                    <asp:Label ID="Label2" runat="server" Text='<%# Eval("SheetDate") %>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:BoundField DataField="Filename" HeaderText="Filename" SortExpression="Filename" />
            <asp:BoundField DataField="Manufacturer" HeaderText="Manufacturer" SortExpression="Manufacturer" />
            <asp:BoundField DataField="UsageDept" HeaderText="UsageDept" SortExpression="UsageDept" />
            <asp:TemplateField HeaderText="Notes" SortExpression="Notes">
                <EditItemTemplate>
                    <asp:TextBox ID="TextBox5" runat="server" Text='<%# Bind("Notes") %>' TextMode="MultiLine"></asp:TextBox>
                </EditItemTemplate>
                <ItemTemplate>
                    <asp:Label ID="Label6" runat="server" Text='<%# Bind("Notes") %>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="Status" SortExpression="Status">
                <EditItemTemplate>
                    <asp:DropDownList ID="ddlStatus" runat="server" DataSourceID="sqlStatus" DataTextField="DisplayValue"
                        DataValueField="Value" SelectedValue='<%# Bind("Status") %>'>
                    </asp:DropDownList>
                    <asp:SqlDataSource ID="sqlStatus" runat="server" ConnectionString="<%$ ConnectionStrings:NCLWebConnectionString %>"
                        SelectCommand="getOptionList" SelectCommandType="StoredProcedure">
                        <SelectParameters>
                            <asp:Parameter DefaultValue="msds_Status" Name="ListName" Type="String" />
                        </SelectParameters>
                    </asp:SqlDataSource>
                </EditItemTemplate>
                <ItemTemplate>
                    <asp:DropDownList ID="ddlStatus" runat="server" DataSourceID="sqlStatus" disabled="true"
                        BackColor="White" DataTextField="DisplayValue" DataValueField="Value" SelectedValue='<%# Bind("Status") %>'>
                    </asp:DropDownList>
                    <asp:SqlDataSource ID="sqlStatus" runat="server" ConnectionString="<%$ ConnectionStrings:NCLWebConnectionString %>"
                        SelectCommand="getOptionList" SelectCommandType="StoredProcedure">
                        <SelectParameters>
                            <asp:Parameter DefaultValue="msds_Status" Name="ListName" Type="String" />
                        </SelectParameters>
                    </asp:SqlDataSource>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="Health" SortExpression="Health">
                <EditItemTemplate>
                    <center>
                        <asp:TextBox ID="TextBox2" runat="server" Style="text-align: center" Text='<%# Bind("Health") %>'
                            Width="25px"></asp:TextBox>
                    </center>
                </EditItemTemplate>
                <ItemTemplate>
                    <asp:Label ID="Label3" runat="server" Text='<%# Bind("Health") %>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="Fire" SortExpression="Fire">
                <EditItemTemplate>
                    <center>
                        <asp:TextBox ID="TextBox3" runat="server" Text='<%# Bind("Fire") %>' Width="25px"></asp:TextBox></center>
                </EditItemTemplate>
                <ItemTemplate>
                    <asp:Label ID="Label4" runat="server" Text='<%# Bind("Fire") %>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="Reactivity" SortExpression="Reactivity">
                <EditItemTemplate>
                    <center>
                        <asp:TextBox ID="TextBox4" runat="server" Text='<%# Bind("Reactivity") %>' Width="25px"></asp:TextBox></center>
                </EditItemTemplate>
                <ItemTemplate>
                    <asp:Label ID="Label5" runat="server" Text='<%# Bind("Reactivity") %>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:BoundField DataField="DateUpdated" HeaderText="DateUpdated" SortExpression="DateUpdated"
                ReadOnly="True" />
            <asp:BoundField DataField="UpdatedBy" ReadOnly="True" HeaderText="UpdatedBy" SortExpression="UpdatedBy" />
        </Columns>
    </cc2:BulkEditGridView>
    <asp:SqlDataSource ID="sqlData" runat="server" ConnectionString="<%$ ConnectionStrings:NCLWebConnectionString %>"
        SelectCommand="SELECT [ID], [ChemicalTitle], dbo.dateOnly([SheetDate]) As [SheetDate], [Filename], [Manufacturer], [UsageDept], [Notes], isnull([Status], 4) as [Status], [Health], [Fire], [Reactivity], [DateUpdated], [UpdatedBy] FROM [msds_Sheets] ORDER BY [ChemicalTitle]"
        UpdateCommand="msds_UpdateSheet" UpdateCommandType="StoredProcedure">
        <UpdateParameters>
            <asp:Parameter Name="ID" Type="Int32" />
            <asp:Parameter Name="ChemicalTitle" Type="String" />
            <asp:Parameter Name="SheetDate" DbType="DateTime" />
            <asp:Parameter Name="Filename" Type="String" />
            <asp:Parameter Name="Manufacturer" Type="String" />
            <asp:Parameter Name="UsageDept" Type="String" />
            <asp:Parameter Name="Notes" Type="String" />
            <asp:Parameter Name="Status" Type="Int16" />
            <asp:Parameter Name="Health" Type="Int16" />
            <asp:Parameter Name="Fire" Type="Int16" />
            <asp:Parameter Name="Reactivity" Type="Int16" />
            <asp:ProfileParameter Name="UpdatedBy" Type="String" PropertyName="Username" />
        </UpdateParameters>
    </asp:SqlDataSource>
</asp:Content>

测试程序如下:
-加载页面。
- 编辑第一行中的内容。
- 单击保存按钮。

I'm using the BulkEditGridView control as discussed http://roohit.com/site/showArc.php?shid=bbb62, and it's perfect for my needs. The problem I'm having is that whenever I save, every visible row (I have paging enabled) gets updated. Stepping through the code I see that grid.DirtyRows.Count is equal to the number of items per page minus 1 when I click the save button.

I can't find where rows are set as dirty. Any suggestions where I can look?

My code-behind has only this:

using System;
using System.Web.UI.WebControls;
using System.Collections.Generic;
using System.Collections;
using System.Data.Common;

public partial class MSDS_MSDS_Admin_GridUpdate : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            gridMSDS.DataKeyNames = new String[] { "id" };
            gridMSDS.DataBind();
        }
    }
}

EDIT: Here is the aspx code.

<%@ Page Language="C#" MasterPageFile="~/MSDS/MSDS.master" AutoEventWireup="true" EnableEventValidation="false" CodeFile="GridUpdate.aspx.cs" Inherits="MSDS_MSDS_Admin_GridUpdate" Title="Untitled Page" %>

<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="cc1" %>
<%@ Register Assembly="RealWorld.Grids" Namespace="RealWorld.Grids" TagPrefix="cc2" %>
<asp:Content ID="Content1" ContentPlaceHolderID="PageContent" runat="Server">
    <br />
    <asp:Button ID="btnSave" runat="server" Text="Save" Width="100%" />
    <cc2:BulkEditGridView ID="gridMSDS" runat="server" AllowPaging="True" AllowSorting="True"
        DataSourceID="sqlData" EnableInsert="False" InsertRowCount="1" PageSize="20"
        SaveButtonID="btnSave" AutoGenerateColumns="False">
        <Columns>
            <asp:BoundField DataField="ID" HeaderText="ID" InsertVisible="False" Visible="false"
                ReadOnly="True" SortExpression="ID" />
            <asp:BoundField DataField="ChemicalTitle" HeaderText="ChemicalTitle" SortExpression="ChemicalTitle" />
            <asp:TemplateField HeaderText="SheetDate" SortExpression="SheetDate">
                <EditItemTemplate>
                    <asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("SheetDate") %>' Width="85px"></asp:TextBox>
                    <cc1:CalendarExtender ID="TextBox1_CalendarExtender" runat="server" Enabled="True"
                        TargetControlID="TextBox1">
                    </cc1:CalendarExtender>
                </EditItemTemplate>
                <ItemTemplate>
                    <asp:Label ID="Label2" runat="server" Text='<%# Eval("SheetDate") %>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:BoundField DataField="Filename" HeaderText="Filename" SortExpression="Filename" />
            <asp:BoundField DataField="Manufacturer" HeaderText="Manufacturer" SortExpression="Manufacturer" />
            <asp:BoundField DataField="UsageDept" HeaderText="UsageDept" SortExpression="UsageDept" />
            <asp:TemplateField HeaderText="Notes" SortExpression="Notes">
                <EditItemTemplate>
                    <asp:TextBox ID="TextBox5" runat="server" Text='<%# Bind("Notes") %>' TextMode="MultiLine"></asp:TextBox>
                </EditItemTemplate>
                <ItemTemplate>
                    <asp:Label ID="Label6" runat="server" Text='<%# Bind("Notes") %>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="Status" SortExpression="Status">
                <EditItemTemplate>
                    <asp:DropDownList ID="ddlStatus" runat="server" DataSourceID="sqlStatus" DataTextField="DisplayValue"
                        DataValueField="Value" SelectedValue='<%# Bind("Status") %>'>
                    </asp:DropDownList>
                    <asp:SqlDataSource ID="sqlStatus" runat="server" ConnectionString="<%$ ConnectionStrings:NCLWebConnectionString %>"
                        SelectCommand="getOptionList" SelectCommandType="StoredProcedure">
                        <SelectParameters>
                            <asp:Parameter DefaultValue="msds_Status" Name="ListName" Type="String" />
                        </SelectParameters>
                    </asp:SqlDataSource>
                </EditItemTemplate>
                <ItemTemplate>
                    <asp:DropDownList ID="ddlStatus" runat="server" DataSourceID="sqlStatus" disabled="true"
                        BackColor="White" DataTextField="DisplayValue" DataValueField="Value" SelectedValue='<%# Bind("Status") %>'>
                    </asp:DropDownList>
                    <asp:SqlDataSource ID="sqlStatus" runat="server" ConnectionString="<%$ ConnectionStrings:NCLWebConnectionString %>"
                        SelectCommand="getOptionList" SelectCommandType="StoredProcedure">
                        <SelectParameters>
                            <asp:Parameter DefaultValue="msds_Status" Name="ListName" Type="String" />
                        </SelectParameters>
                    </asp:SqlDataSource>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="Health" SortExpression="Health">
                <EditItemTemplate>
                    <center>
                        <asp:TextBox ID="TextBox2" runat="server" Style="text-align: center" Text='<%# Bind("Health") %>'
                            Width="25px"></asp:TextBox>
                    </center>
                </EditItemTemplate>
                <ItemTemplate>
                    <asp:Label ID="Label3" runat="server" Text='<%# Bind("Health") %>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="Fire" SortExpression="Fire">
                <EditItemTemplate>
                    <center>
                        <asp:TextBox ID="TextBox3" runat="server" Text='<%# Bind("Fire") %>' Width="25px"></asp:TextBox></center>
                </EditItemTemplate>
                <ItemTemplate>
                    <asp:Label ID="Label4" runat="server" Text='<%# Bind("Fire") %>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="Reactivity" SortExpression="Reactivity">
                <EditItemTemplate>
                    <center>
                        <asp:TextBox ID="TextBox4" runat="server" Text='<%# Bind("Reactivity") %>' Width="25px"></asp:TextBox></center>
                </EditItemTemplate>
                <ItemTemplate>
                    <asp:Label ID="Label5" runat="server" Text='<%# Bind("Reactivity") %>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:BoundField DataField="DateUpdated" HeaderText="DateUpdated" SortExpression="DateUpdated"
                ReadOnly="True" />
            <asp:BoundField DataField="UpdatedBy" ReadOnly="True" HeaderText="UpdatedBy" SortExpression="UpdatedBy" />
        </Columns>
    </cc2:BulkEditGridView>
    <asp:SqlDataSource ID="sqlData" runat="server" ConnectionString="<%$ ConnectionStrings:NCLWebConnectionString %>"
        SelectCommand="SELECT [ID], [ChemicalTitle], dbo.dateOnly([SheetDate]) As [SheetDate], [Filename], [Manufacturer], [UsageDept], [Notes], isnull([Status], 4) as [Status], [Health], [Fire], [Reactivity], [DateUpdated], [UpdatedBy] FROM [msds_Sheets] ORDER BY [ChemicalTitle]"
        UpdateCommand="msds_UpdateSheet" UpdateCommandType="StoredProcedure">
        <UpdateParameters>
            <asp:Parameter Name="ID" Type="Int32" />
            <asp:Parameter Name="ChemicalTitle" Type="String" />
            <asp:Parameter Name="SheetDate" DbType="DateTime" />
            <asp:Parameter Name="Filename" Type="String" />
            <asp:Parameter Name="Manufacturer" Type="String" />
            <asp:Parameter Name="UsageDept" Type="String" />
            <asp:Parameter Name="Notes" Type="String" />
            <asp:Parameter Name="Status" Type="Int16" />
            <asp:Parameter Name="Health" Type="Int16" />
            <asp:Parameter Name="Fire" Type="Int16" />
            <asp:Parameter Name="Reactivity" Type="Int16" />
            <asp:ProfileParameter Name="UpdatedBy" Type="String" PropertyName="Username" />
        </UpdateParameters>
    </asp:SqlDataSource>
</asp:Content>

Testing Procedure is as follows:
-Load the page.
-Edit something in the first row.
-Click save button.

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评论(2

谈情不如逗狗 2024-11-11 04:37:05

您发布的代码看起来不错。我的测试代码与您的几乎相同,但我无法产生您所看到的不需要的结果。

你的代码和我的代码之间最显着的区别是我没有你的母版页的代码。我的母版页是VS 2008创建的默认页面。除此之外,差异在于SQL和底层数据库。具体来说,我没有使用任何存储过程,并且我对所涉及的数据类型做出了合理的假设:IDintStatussmallintSheetDateDateDateUpdatedDateTime,其他均为 代码>varchar。

编辑:您的SheetDate似乎只是数据库中基础DateTime值的日期部分。您的查询出于显示目的而转换基础数据值的事实并不相关,因为网格视图无法得知它正在获取修改后的值。 编辑结束

以下是诊断问题的一些建议:

  • 不使用母版页或使用母版页进行测试
    非常简单的虚拟母版页
    保证没有脚本
    BulkEditGridView 交互。
    由于 ToolkitScriptManager
    显然在你的主页上,你会
    需要移动脚本
    管理器控制页面本身,
    或者暂时摆脱
    CalendarExtender 元素,其中
    需要脚本管理器。

  • 暂时替换状态
    具有绑定数据的模板字段
    场,以消除可能性
    DropDownList 交互。
    下拉列表没有引起
    我的测试中出现问题,但可能有
    你们之间存在细微的差别
    代码和我的。

  • 如果这些都没有帮助,那么可能的原因是您的
    BulkEditGridView 的版本。

编辑 - 诊断的其他建议:

  • 根据对 BulkEditGridView 源代码的检查,代码似乎正确跟踪了网格的哪些行是“脏的” ”。因此,产生虚假脏行的最可能原因是网格中的一个或多个控件错误地检测到其数据内容的更改。您可以使用 BulkEditGridView 的源代码(而不是预编译的 DLL)在调试器中检测到这一点。

  • HandleRowChanged 的开头设置一个断点,该事件处理程序检测网格中任何单元格中的更改。通过在调试器中检查该对象的 sender 参数,您可以了解网格中的哪些控件正在发生值更改。特别是,您将能够判断哪些控件(如果有)错误地触发了值更改事件。

  • 确定哪些控件错误地报告其值已更改后,您可以重点关注原因发生这种情况。

编辑结束

改进代码的一些其他建议如下。 这些不会解决原始问题,但会使代码更清晰:

  • 在所有模板字段中,删除 ItemTemplate。它们永远无法使用,因为 BulkEditGridView 强制每一行都处于编辑状态。

  • 在后面的代码中,BindData()
    不需要调用,因为源
    数据在声明式中指定
    标记,以及网格视图
    控件会自动绑定
    数据。

The code you have posted looks fine. My test code is almost identical to yours, but I cannot produce the unwanted results you are seeing.

The most significant difference between your code and mine is that I don't have the code for your master page. My master page is the default page created by VS 2008. Other than that, the differences are in the SQL and the underlying database. Specifically, I am not using any stored procedures, and I have made reasonable assumptions about the data types involved: the ID is int, Status is smallint, SheetDate is Date, DateUpdated is DateTime, and everything else is varchar.

EDIT: Your SheetDate appears to be just the date portion of an underlying DateTime value from the database. The fact that your query transforms the underlying data value for display purposes is not relevant, because the grid view can't tell that it is getting a modified value. END OF EDIT

Here are a few suggestions for diagnosing the problem:

  • Test without master page, or with a
    very simple dummy master page that is
    guaranteed not to have scripts that
    interact with the BulkEditGridView.
    Since the ToolkitScriptManager is
    apparently on your master page, you will
    need to either move the script
    manager control to the page itself,
    or else temporarily get rid of the
    CalendarExtender element, which
    requires the script manager.

  • Temporarily replace the Status
    template field with a bound data
    field, to eliminate possibility of
    interaction with the DropDownList.
    The drop down list did not cause
    problems in my tests, but there may
    be subtle differences between your
    code and mine.

  • If neither of these help, then a possible cause is a problem in your
    version of the BulkEditGridView.

EDIT - Additional suggestions for diagnosis:

  • Based on examination of the source code for BulkEditGridView, it appears that the code is properly tracking which rows of the grid are "dirty". Therefore, the most likely cause of a spurious dirty row is that one or more controls in the grid are incorrectly detecting a change to their data content. You can detect this in the debugger, using the source code for BulkEditGridView, rather than the pre-compiled DLL.

  • Set a breakpoint at the start of HandleRowChanged, the event handler which detects changes in any cell of the grid. By examining the sender parameter of that object in the debugger, you can tell which controls in the grid are undergoing value changes. In particular, you will be able to tell which controls, if any, are incorrectly triggering a value change event.

  • Once you determine which control(s) are incorrectly reporting that their value has changed, you can focus on why this is happening.

END OF EDIT

Some other suggestions to improve the code are as follows. These will not solve the original problem, but will make the code cleaner:

  • In all of the template fields, remove the ItemTemplates. They can never be used, since the BulkEditGridView forces every row to be in the edit state.

  • In the code behind, the BindData()
    call is not needed, since the source
    data is specified in the declarative
    markup, and therefore the grid view
    control will automatically bind the
    data.

命比纸薄 2024-11-11 04:37:05

我不是 BulkEditGridView 控件方面的专家,但这是我在 Matt Dotson 的 博客条目

您可能无法知道该行已更新,除非您明确地观察更改。首先,为每一行添加一个更改处理程序

protected override void InitializeRow(GridViewRow row, DataControlField[] fields)
   {
      base.InitializeRow(row, fields);
      foreach (DataControlFieldCell cell in row.Cells)
      {
         if (cell.Controls.Count > 0)
         {
            AddChangedHandlers(cell.Controls);
         }
      }
   }

您可以使用此代码片段

private void AddChangedHandlers(ControlCollection controls)
   {
      foreach (Control ctrl in controls)
      {
         if (ctrl is TextBox)
         {
            ((TextBox)ctrl).TextChanged += new EventHandler(this.HandleRowChanged);
         }
         else if (ctrl is CheckBox)
         {
            ((CheckBox)ctrl).CheckedChanged += new EventHandler(this.HandleRowChanged);
         }
         else if (ctrl is DropDownList)
         {
            ((DropDownList)ctrl).SelectedIndexChanged += new EventHandler(this.HandleRowChanged);
         }
      }
   }

然后定义一个脏行列表并添加需要更新的行(在事件处理程序中)

   private List<int> dirtyRows = new List<int>();
   void HandleRowChanged(object sender, EventArgs args)
   {
      GridViewRow row = ((Control) sender).NamingContainer as GridViewRow;
      if (null != row && !dirtyRows.Contains(row.RowIndex))
      {
         dirtyRows.Add(row.RowIndex);
      }
   }

最后,要提交更改,请迭代所有脏行并保存更改

   public void Save()
   {
      foreach (int row in dirtyRows)
      {
         this.UpdateRow(row, false);
      }

      dirtyRows.Clear();
   }

这是您的 ASPX 代码

<asp:Button runat="server" ID="SaveButton" Text="Save Data" />
   <blog:BulkEditGridView runat="server" id="EditableGrid" DataSourceID="AdventureWorks" AutoGenerateColumns="False" DataKeyNames="LocationID" SaveButtonID="SaveButton" >
      <Columns>
         <asp:BoundField DataField="LocationID" HeaderText="LocationID" InsertVisible="False" ReadOnly="True" SortExpression="LocationID" />
         <asp:BoundField DataField="Name" HeaderText="Name" SortExpression="Name" />
         <asp:BoundField DataField="Availability" HeaderText="Availability" SortExpression="Availability" />
         <asp:BoundField DataField="CostRate" HeaderText="CostRate" SortExpression="CostRate" />
      </Columns>
   </blog:BulkEditGridView>

I am not an expert in BulkEditGridView control, but this is what I found at Matt Dotson's blog entry

You may not be able to know that the row has been updated, unless you watch for the change explicitly. First, for each row add a change handler

protected override void InitializeRow(GridViewRow row, DataControlField[] fields)
   {
      base.InitializeRow(row, fields);
      foreach (DataControlFieldCell cell in row.Cells)
      {
         if (cell.Controls.Count > 0)
         {
            AddChangedHandlers(cell.Controls);
         }
      }
   }

You can use this snippet

private void AddChangedHandlers(ControlCollection controls)
   {
      foreach (Control ctrl in controls)
      {
         if (ctrl is TextBox)
         {
            ((TextBox)ctrl).TextChanged += new EventHandler(this.HandleRowChanged);
         }
         else if (ctrl is CheckBox)
         {
            ((CheckBox)ctrl).CheckedChanged += new EventHandler(this.HandleRowChanged);
         }
         else if (ctrl is DropDownList)
         {
            ((DropDownList)ctrl).SelectedIndexChanged += new EventHandler(this.HandleRowChanged);
         }
      }
   }

Then you define a dirty row list and add rows that needs to be updated there (in the event handler)

   private List<int> dirtyRows = new List<int>();
   void HandleRowChanged(object sender, EventArgs args)
   {
      GridViewRow row = ((Control) sender).NamingContainer as GridViewRow;
      if (null != row && !dirtyRows.Contains(row.RowIndex))
      {
         dirtyRows.Add(row.RowIndex);
      }
   }

Finally, to commit changes, iterate through all the dirty rows and save changes

   public void Save()
   {
      foreach (int row in dirtyRows)
      {
         this.UpdateRow(row, false);
      }

      dirtyRows.Clear();
   }

And here is your ASPX code

<asp:Button runat="server" ID="SaveButton" Text="Save Data" />
   <blog:BulkEditGridView runat="server" id="EditableGrid" DataSourceID="AdventureWorks" AutoGenerateColumns="False" DataKeyNames="LocationID" SaveButtonID="SaveButton" >
      <Columns>
         <asp:BoundField DataField="LocationID" HeaderText="LocationID" InsertVisible="False" ReadOnly="True" SortExpression="LocationID" />
         <asp:BoundField DataField="Name" HeaderText="Name" SortExpression="Name" />
         <asp:BoundField DataField="Availability" HeaderText="Availability" SortExpression="Availability" />
         <asp:BoundField DataField="CostRate" HeaderText="CostRate" SortExpression="CostRate" />
      </Columns>
   </blog:BulkEditGridView>
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