asp.net - GridView - 在后面的代码中设置列的宽度 (AutoGenerateColumns="true")

Question

我的网格视图：

<asp:GridView ID="GridView1" runat="server"
    OnRowDataBound="GridView1_RowDataBound"
    AutoGenerateColumns="true"
    DataKeyNames="Role_id">
</asp:GridView>

在后面的代码中：

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.Header)
    {
       //e.Row.Cells[2].Width = 120;                      // isn't working....
    }
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        e.Row.Cells[2].Width = new Unit(120);             // isn't working....
        TableCell cell = e.Row.Cells[2];
        cell.HorizontalAlign = HorizontalAlign.Right;           //**** does work!
        cell.BackColor = Color.LightGray;                       //**** does work!
        //cell.Width = 120;                               // isn't working....
        //e.Row.Cells[2].Width = new Unit("120px") ;      // isn't working....
        //e.Row.Cells[2].CssClass = "myGV_Cell_Width";    // isn't working....
    }
}

GridView 已成功填充。
请注意，我可以设置列的对齐方式和背景色，但不能设置其宽度。
我尝试了许多解决方案，但没有一个有效。
它总是将列的大小调整为最长的内容。
能做到吗……？

Answer 1

我可以使用 RowCreated 事件来做到这一点，但我必须设置网格的宽度并将网格设置为 table-layout:fixed

<asp:GridView ID="GridView1" runat="server"
    style="table-layout:fixed;" Width="1000px"
    OnRowCreated = "GridView1_RowCreated"
    OnRowDataBound="GridView1_RowDataBound"
    AutoGenerateColumns="true"
    DataKeyNames="Role_id">
</asp:GridView>

protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e)
{

 e.Row.Cells[0].Width = New Unit("220px");

}

Answer 2

asp:GridView 呈现为 HTML 表格，因此您只需要使用 CSS 设置列宽

th, td {
    width: 120px;
}