删除按钮仅删除了GridView中的第一行

Question

我在GridView中添加了删除按钮。 但是问题在于它总是删除第一行。

例如，如果我要删除第二行或第三行，则第一行中的数据将被删除。 我只希望按钮删除它旁边的行：

public void bindgrid()
{
    SqlConnection conn = new SqlConnection("cnString");
    SqlCommand cmd = new SqlCommand("select Id,Name, from myTable ", conn);
    SqlDataAdapter da = new SqlDataAdapter("", conn);
    da.SelectCommand = new SqlCommand("select Id,Name, from myTable", conn);
    DataSet ds = new DataSet();
    da.Fill(ds, "data");
    gridview1.DataSource = ds.Tables[0].DefaultView;
    gridview1.DataBind();
}


protected void gdview_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
    int userid = int.Parse(gridview1.DataKeys[0].Value.ToString());
    SqlConnection conn = new SqlConnection("cnString");
    SqlDataAdapter da = new SqlDataAdapter("", conn);
    conn.Open();
    da.DeleteCommand = new SqlCommand("delete from myTable where Id=" + userid , conn);

    da.DeleteCommand.ExecuteNonQuery();
    conn.Close();
    bindgrid();
}

Answer 1

您应该传递当前行索引而不是gridview1.DataKeys[0]

 protected void gdview_RowDeleting(object sender, GridViewDeleteEventArgs e)
   {
    int userid = int.Parse(gridview1.DataKeys[e.RowIndex].Value.ToString());
    SqlConnection conn = new SqlConnection("cnString");
    SqlDataAdapter da = new SqlDataAdapter("", conn);
    conn.Open();
    da.DeleteCommand = new SqlCommand("delete from myTable where Id=" + userid , conn);

    da.DeleteCommand.ExecuteNonQuery();
    conn.Close();
    bindgrid();
   }

Answer 2

问题在下面的行中

int userid = int.Parse(gridview1.DataKeys[0].Value.ToString());

您总是通过使用[0]获取第一行的用户ID。

从“ e”获取适当的值并将其传递。

e.RowIndex

Answer 3

像这样的东西

GridViewRow row = gridview1.Rows[e.RowIndex];
int userid = int.Parse(row[0].Value.ToString());

Answer 4

替换此行

int userid = int.Parse(gridview1.DataKeys[0].Value.ToString());

对此

int userid = int.Parse(gridview1.DataKeys[e.RowIndex].Value.ToString());