Gridview vith 复选框 - 当选中某些复选框时使按钮处于非活动状态

发布于 2024-12-27 19:51:09 字数 1099 浏览 0 评论 0原文

我有一个 Gridview 绑定了 SQL 表中的一些数据。在 GV 的第一列中我有复选框。是否可以根据选中的复选框来启用/禁用按钮？

为了更好地理解这里有一个例子；

在 GV 中，我们有第一列 cbox，第二列是 ID，第三列是类别。

<asp:GridView ID="MyGV" runat="server" AutoGenerateColumns="False" DataKeyNames="ID">
    <Columns>
        <asp:TemplateField>
            <ItemTemplate>
                <asp:CheckBox ID="MyCBox" runat="server" />
            </ItemTemplate>
        </asp:TemplateField>
        <asp:BoundField DataField="ID" HeaderText="ID" SortExpression="ID" />
        <asp:BoundField DataField="category" HeaderText="Category" SortExpression="category" />
    </Columns>
</asp:GridView>

我们有两个按钮（Btn1 和 Btn2）

<asp:Button ID="Btn1" runat="server" Text="btn1" OnClick="Btn1_Click" />
<asp:Button ID="Btn2" runat="server" Text="btn2" OnClick="Btn2_Click" />

现在...假设我们有 2 个类别（Cat1 和 Cat2）。当我们选择一个复选框并且该行中的类别值为 Cat1 时，我们启用了 Btn1 并禁用了 Btn2；

Btn1.Enabled = true;
Btn2.Enabled = false;

这可以做到吗？如何？

原文

I have a Gridview binded with some data from SQL table. In the first column of GV I have CheckBoxes. Is it possible, to enable/disable button depending on which checkboxes were checked?

For better understanding here is an example;

In GV we have first column of cboxes, second column is ID and third column is Category.

<asp:GridView ID="MyGV" runat="server" AutoGenerateColumns="False" DataKeyNames="ID">
    <Columns>
        <asp:TemplateField>
            <ItemTemplate>
                <asp:CheckBox ID="MyCBox" runat="server" />
            </ItemTemplate>
        </asp:TemplateField>
        <asp:BoundField DataField="ID" HeaderText="ID" SortExpression="ID" />
        <asp:BoundField DataField="category" HeaderText="Category" SortExpression="category" />
    </Columns>
</asp:GridView>

We have two Buttons (Btn1 and Btn2)

<asp:Button ID="Btn1" runat="server" Text="btn1" OnClick="Btn1_Click" />
<asp:Button ID="Btn2" runat="server" Text="btn2" OnClick="Btn2_Click" />

Now...Let's say we have 2 categories (Cat1 and Cat2). When we select a checkbox and in that row Category value is Cat1, we have Btn1 enabled and Btn2 disabled;

Btn1.Enabled = true;
Btn2.Enabled = false;

Can this be done? How?

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谎言 2025-01-03 19:51:09

假设您只有两个类别

<asp:GridView ID="MyGV" runat="server" AutoGenerateColumns="False" DataKeyNames="ID">
<Columns>
    <asp:TemplateField>
        <ItemTemplate>
             <asp:CheckBox ID="MyCBox" Text="Select Cat" AutoPostBack="true" ToolTip='<%#Bind("category") %>' OnCheckedChanged="MyCBox_CheckedChanged" runat="server" />
        </ItemTemplate>
    </asp:TemplateField>
    <asp:BoundField DataField="ID" HeaderText="ID" SortExpression="ID" />
    <asp:BoundField DataField="category" HeaderText="Category" SortExpression="category" />
</Columns>

复选框的代码隐藏事件，请尝试此操作

protected void MyCBox_CheckedChanged(object sender, EventArgs e)
{
    if( ((CheckBox)sender).ToolTip == "cat1"
      { 
       Btn1.Enabled = true;
       Btn2.Enabled = false;
      }
    else 
      { 
       Btn1.Enabled = false;
       Btn2.Enabled = true;
      }          

}

Try this assuming that you have only two categories

<asp:GridView ID="MyGV" runat="server" AutoGenerateColumns="False" DataKeyNames="ID">
<Columns>
    <asp:TemplateField>
        <ItemTemplate>
             <asp:CheckBox ID="MyCBox" Text="Select Cat" AutoPostBack="true" ToolTip='<%#Bind("category") %>' OnCheckedChanged="MyCBox_CheckedChanged" runat="server" />
        </ItemTemplate>
    </asp:TemplateField>
    <asp:BoundField DataField="ID" HeaderText="ID" SortExpression="ID" />
    <asp:BoundField DataField="category" HeaderText="Category" SortExpression="category" />
</Columns>

Code behind event for the checkbox

protected void MyCBox_CheckedChanged(object sender, EventArgs e)
{
    if( ((CheckBox)sender).ToolTip == "cat1"
      { 
       Btn1.Enabled = true;
       Btn2.Enabled = false;
      }
    else 
      { 
       Btn1.Enabled = false;
       Btn2.Enabled = true;
      }          

}

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