如何从GridView中删除一行?

发布于 2024-07-14 02:16:59 字数 587 浏览 8 评论 0原文

我在 2005

如何从 GridView 中删除特定行。

我编写了以下代码。 但这不起作用...

DataRow dr = dtPrf_Mstr.NewRow();
dtPrf_Mstr.Rows.Add(dr);
GVGLCode.DataSource = dtPrf_Mstr;
GVGLCode.DataBind();

int iCount = GVGLCode.Rows.Count;
for (int i = 0; i <= iCount; i++)
{
    GVGLCode.DeleteRow(i);
}
GVGLCode.DataBind();

I am using GridView control in 2005 using .

How can I delete a particular row from GridView.

I have written the following code. But it's not working...

DataRow dr = dtPrf_Mstr.NewRow();
dtPrf_Mstr.Rows.Add(dr);
GVGLCode.DataSource = dtPrf_Mstr;
GVGLCode.DataBind();

int iCount = GVGLCode.Rows.Count;
for (int i = 0; i <= iCount; i++)
{
    GVGLCode.DeleteRow(i);
}
GVGLCode.DataBind();

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评论(8

傻比既视感 2024-07-21 02:16:59

您正在从 gridview 中删除该行,但随后您将再次调用 databind ,这只是将 gridview 刷新到原始数据源所在的状态。

要么从数据源中删除它,然后再进行 databind ,或者从 databind 中删除它没有重新数据绑定的gridview。

You are deleting the row from the gridview but you are then going and calling databind again which is just refreshing the gridview to the same state that the original datasource is in.

Either remove it from the datasource and then databind, or databind and remove it from the gridview without redatabinding.

心在旅行 2024-07-21 02:16:59

您将从 gridview 中删除该行,然后将其重新绑定到数据源(仍包含该行)。 要么从数据源中删除该行,要么之后不重新绑定网格视图。

You're deleting the row from the gridview and then rebinding it to the datasource (which still contains the row). Either delete the row from the datasource, or don't rebind the gridview afterwards.

不一样的天空 2024-07-21 02:16:59

默认答案是从用作 GridView 数据源的任何集合中删除该项目。

如果该选项不理想,那么我建议您使用 GridView 的 RowDataBound 事件有选择地将行的 (e.Row) Visible 属性设置为 false 。

The default answer is to remove the item from whatever collection you're using as the GridView's DataSource.

If that option is undesirable then I recommend that you use the GridView's RowDataBound event to selectively set the row's (e.Row) Visible property to false.

柒七 2024-07-21 02:16:59
using System;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Data.SqlClient;

public partial class Default3 : System.Web.UI.Page
{
   DataTable dt = new DataTable();
    DataSet Gds = new DataSet();
   // DataColumn colm1 = new DataColumn();
   //DataColumn colm2 = new DataColumn();

    protected void Page_Load(object sender, EventArgs e)
    {
        dt.Columns.Add("ExpId", typeof(int));
        dt.Columns.Add("FirstName", typeof(string));

    }


    protected void BtnLoad_Click(object sender, EventArgs e)
    {
        //   gvLoad is Grid View Id
        if (gvLoad.Rows.Count == 0)
        {
            Gds.Tables.Add(tblLoad());
        }
        else
        {
            dt = tblGridRow();
            dt.Rows.Add(tblRow());
            Gds.Tables.Add(dt);
        }
        gvLoad.DataSource = Gds;
        gvLoad.DataBind();
    }

    protected DataTable tblLoad()
    {
        dt.Rows.Add(tblRow());
        return dt;
    }
    protected DataRow tblRow()
    {
        DataRow dr;
        dr = dt.NewRow();
        dr["Exp Id"] = Convert.ToInt16(txtId.Text);
        dr["First Name"] = Convert.ToString(txtName.Text);
        return dr;
    }

    protected DataTable tblGridRow()
    {
        DataRow dr;
        for (int i = 0; i < gvLoad.Rows.Count; i++)
        {
            if (gvLoad.Rows[i].Cells[0].Text != null)
            {

                dr = dt.NewRow();
                dr["Exp Id"] = gvLoad.Rows[i].Cells[1].Text.ToString();
                dr["First Name"] = gvLoad.Rows[i].Cells[2].Text.ToString();
                dt.Rows.Add(dr);

            }

        }
        return dt;
    }

    protected void btn_Click(object sender, EventArgs e)
    {
        dt = tblGridRow();
        dt.Rows.Add(tblRow());
        Session["tab"] = dt;
        // Response.Redirect("Default.aspx");
    }

    protected void gvLoad_RowDeleting(object sender, GridViewDeleteEventArgs e)
    {
        dt = tblGridRow();
        dt.Rows.RemoveAt(e.RowIndex);
        gvLoad.DataSource = dt;
        gvLoad.DataBind();
    }
}
using System;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Data.SqlClient;

public partial class Default3 : System.Web.UI.Page
{
   DataTable dt = new DataTable();
    DataSet Gds = new DataSet();
   // DataColumn colm1 = new DataColumn();
   //DataColumn colm2 = new DataColumn();

    protected void Page_Load(object sender, EventArgs e)
    {
        dt.Columns.Add("ExpId", typeof(int));
        dt.Columns.Add("FirstName", typeof(string));

    }


    protected void BtnLoad_Click(object sender, EventArgs e)
    {
        //   gvLoad is Grid View Id
        if (gvLoad.Rows.Count == 0)
        {
            Gds.Tables.Add(tblLoad());
        }
        else
        {
            dt = tblGridRow();
            dt.Rows.Add(tblRow());
            Gds.Tables.Add(dt);
        }
        gvLoad.DataSource = Gds;
        gvLoad.DataBind();
    }

    protected DataTable tblLoad()
    {
        dt.Rows.Add(tblRow());
        return dt;
    }
    protected DataRow tblRow()
    {
        DataRow dr;
        dr = dt.NewRow();
        dr["Exp Id"] = Convert.ToInt16(txtId.Text);
        dr["First Name"] = Convert.ToString(txtName.Text);
        return dr;
    }

    protected DataTable tblGridRow()
    {
        DataRow dr;
        for (int i = 0; i < gvLoad.Rows.Count; i++)
        {
            if (gvLoad.Rows[i].Cells[0].Text != null)
            {

                dr = dt.NewRow();
                dr["Exp Id"] = gvLoad.Rows[i].Cells[1].Text.ToString();
                dr["First Name"] = gvLoad.Rows[i].Cells[2].Text.ToString();
                dt.Rows.Add(dr);

            }

        }
        return dt;
    }

    protected void btn_Click(object sender, EventArgs e)
    {
        dt = tblGridRow();
        dt.Rows.Add(tblRow());
        Session["tab"] = dt;
        // Response.Redirect("Default.aspx");
    }

    protected void gvLoad_RowDeleting(object sender, GridViewDeleteEventArgs e)
    {
        dt = tblGridRow();
        dt.Rows.RemoveAt(e.RowIndex);
        gvLoad.DataSource = dt;
        gvLoad.DataBind();
    }
}
空城旧梦 2024-07-21 02:16:59

我的解决方案:

protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
    myobj.myconnection();// connection created
    string mystr = "Delete table_name where water_id= '" + GridView1.DataKeys[e.RowIndex].Value + "'";// query
    sqlcmd = new SqlCommand(mystr, myobj.mycon);
    sqlcmd.ExecuteNonQuery();
    fillgrid();
}

My solution:

protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
    myobj.myconnection();// connection created
    string mystr = "Delete table_name where water_id= '" + GridView1.DataKeys[e.RowIndex].Value + "'";// query
    sqlcmd = new SqlCommand(mystr, myobj.mycon);
    sqlcmd.ExecuteNonQuery();
    fillgrid();
}
给我一枪 2024-07-21 02:16:59

从表 dtPrf_Mstr 而不是从网格视图中删除行。

Delete the row from the table dtPrf_Mstr rather than from the grid view.

绝情姑娘 2024-07-21 02:16:59

你好,如何从datagridview中删除

1.通过id查询删除
2.类型

tabletableadaptor.delete
query(datagridwiewX1.selectedrows[0].cell[0].value.tostring);

hi how to delete from datagridview

1.make query delete by id
2.type

tabletableadaptor.delete
query(datagridwiewX1.selectedrows[0].cell[0].value.tostring);
只是偏爱你 2024-07-21 02:16:59

请尝试这个代码......

DataRow dr = dtPrf_Mstr.NewRow();
dtPrf_Mstr.Rows.Add(dr);
GVGLCode.DataSource = dtPrf_Mstr;
GVGLCode.DataBind();
int iCount = GVGLCode.Rows.Count;
for (int i = 0; i < iCount; i++)
{
   GVGLCode.Rows.Remove(GVGLCode.Rows[i]);
}
GVGLCode.DataBind();

Please try this code.....

DataRow dr = dtPrf_Mstr.NewRow();
dtPrf_Mstr.Rows.Add(dr);
GVGLCode.DataSource = dtPrf_Mstr;
GVGLCode.DataBind();
int iCount = GVGLCode.Rows.Count;
for (int i = 0; i < iCount; i++)
{
   GVGLCode.Rows.Remove(GVGLCode.Rows[i]);
}
GVGLCode.DataBind();
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