Question

我有一个需要导出到Excel的gridview。我已设法从行中删除Checkboxes但不知道如何从Header中删除并完全删除Checkbox列。谢谢你的帮助。

    <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="4" DataKeyNames="Id">
    <Columns>
        <asp:TemplateField HeaderText="Select" >
            <HeaderTemplate>
                <input id="chkAll" onclick="checkAll(this);" runat="server" type="checkbox" />
            </HeaderTemplate>
            <ItemTemplate>
            <asp:CheckBox  ID="CheckBox1" runat="server" />
            </ItemTemplate>
        </asp:TemplateField>
        <asp:BoundField DataField="Event" HeaderText="Event" SortExpression="Event" />
        <asp:BoundField DataField="Event_Description" HeaderText="Event_Description" SortExpression="Event_Description" />
        <asp:BoundField DataField="Start_Date" HeaderText="Start_Date" SortExpression="Start_Date" />
    </Columns>
    </asp:GridView>

这是导出到excel的后端C＃代码。

protected void download_Click(object sender, EventArgs e)
{
    PrepareGridViewForExport(GridView1);
    Response.ClearContent(); 
    Response.AddHeader("content-disposition", "attachment; filename=GridViewToExcel.xls"); 
    Response.ContentType = "application/excel"; 
    StringWriter sWriter = new StringWriter();
    HtmlTextWriter hTextWriter = new HtmlTextWriter(sWriter);
    GridView1.RenderControl(hTextWriter);
    Response.Write(sWriter.ToString());
    Response.End();
}
public override void VerifyRenderingInServerForm(Control control)
{
}
private void PrepareGridViewForExport(Control gv)
{
    Literal l = new Literal();
    string name = String.Empty;
    for (int i = 0; i < gv.Controls.Count; i++)
    {
        if (gv.Controls[i].GetType() == typeof(CheckBox))
        {
            gv.Controls.Remove(gv.Controls[i]);
            gv.Controls.AddAt(i, l);
        }
        if (gv.Controls[i].HasControls())
        {
            PrepareGridViewForExport(gv.Controls[i]);
        }
    }
}

Answer 1

尝试这个导出函数，它隐藏不需要的列，即行的第0列......

protected void btnExportExcel_Click(object sender, EventArgs e)
{
    Response.Clear();
    Response.Buffer = true;
    Response.AddHeader("content-disposition", "attachment;filename=GridViewExport.xls");
    Response.Charset = "";
    Response.ContentType = "application/vnd.ms-excel";
    StringWriter sw = new StringWriter();
    HtmlTextWriter hw = new HtmlTextWriter(sw);
    GridView1.DataBind(); 


    GridView1.HeaderRow.Cells[0].Visible = false; 

    for (int i = 0; i < GridView1.Rows.Count;i++ )
    {
       GridViewRow row = GridView1.Rows[i];
       row.Cells[0].Visible = false;
       row.Cells[0].FindControl("chkCol0").Visible = false; 
     }
    GridView1.RenderControl(hw);
    Response.Write(style);
    Response.Output.Write(sw.ToString());
    Response.End();
}

或

在导出时，删除列。类似的东西：

GridView1.Columns[0].visible = false; GridView1.DataBind(); GridView1.RenderControl(htmlWrite); Response.Write("<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\" />");

Answer 2

除了隐藏控件之外，我们可以在导出到Excel之前删除它们。
这可以通过循环遍历单元格并找到单元格中存在的控件来完成。然后识别控制类型并将其从该单元中删除。

以下是代码：

foreach (GridViewRow row in GridView1.Rows)
{
  row.BackColor = Color.White;
  foreach (TableCell cell in row.Cells)
  {
    cell.CssClass = "textmode";
    for (int i = 0; i < cell.Controls.Count; i++)
    {
      Control ctr = cell.Controls[i];
      if (ctr is TextBox)
        cell.Controls.Remove(ctr);
      else if (ctr is DropDownList)
        cell.Controls.Remove(ctr);
      else if (ctr is Label)
        {
          if (ctr.ClientID.Contains("lblrow"))
            cell.Controls.Remove(ctr);
        }
    }
  }
}

在上面的代码中，我循环遍历每一行和单元格。然后删除所有 TextBox，DropdownList和Label ，其中包含ID lblrow 。

将Gridview导出到Excel时删除复选框

2 个答案: