我想获取id为forExport和隐藏字段值的div
<table width="100%">
<tr>
<td>
<asp:HiddenField ID="hidGridView" runat="server"/>
<asp:GridView ID="grvPayroll" CssClass="table table-striped table-bordered table-hover"
AllowPaging="true"
runat="server" AutoGenerateColumns="False" DataKeyNames="Id"
OnRowCancelingEdit="grvPayroll_RowCancelingEdit" OnRowDataBound="grvPayroll_RowDataBound"
OnRowEditing="grvPayroll_RowEditing" OnRowUpdating="grvPayroll_RowUpdating"
OnRowCommand="grvPayroll_RowCommand" ShowFooter="True" OnRowDeleting="grvPayroll_RowDeleting"
OnRowDeleted="grvPayroll_RowDeleted" OnRowUpdated="grvPayroll_RowUpdated"
OnPageIndexChanging="grvPayroll_OnPageIndexChanging" PageSize="5" OnRowCreated="grvPayroll_RowCreated">
<Columns >
<asp:TemplateField>
<ItemTemplate>
<a href="javascript:expandcollapse('div<%# Eval("Id") %>', 'one');">
<img id='imgdiv<%# Eval("Id") %>' alt="Click to show/hide Payroll Details <%# Eval("PayrollCode") %>" border="0" src="../App_Themes/Admin/img/plus.png"/>
</a>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="PayrollCode" SortExpression="PayrollCode">
<EditItemTemplate>
<asp:TextBox ID="txtPayrollCode" runat="server" Text='<%# Eval("PayrollCode") %>' CssClass="textbox"></asp:TextBox>
<asp:RequiredFieldValidator ID="rfvtxtPayrollCode"
runat="server" ControlToValidate="txtPayrollCode"
ErrorMessage="Required">
*
</asp:RequiredFieldValidator>
</EditItemTemplate>
<FooterTemplate>
<asp:TextBox ID="txtNewPayrollCode" runat="server" CssClass="textbox"></asp:TextBox>
</FooterTemplate>
<ItemTemplate>
<asp:Label ID="lblPayrollCode" runat="server" Text='<%# Bind("PayrollCode") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Function" ShowHeader="False">
<EditItemTemplate>
<asp:LinkButton ID="lbtUpdate" runat="server" CausesValidation="False" CommandName="Update" Text="Update"></asp:LinkButton>
<asp:LinkButton ID="lbtCancel" runat="server" CausesValidation="False" CommandName="Cancel" Text="Cancel"></asp:LinkButton>
</EditItemTemplate>
<FooterTemplate>
<asp:ImageButton ID="lbtAddNew" runat="server" ToolTip="Add New" ImageUrl="../App_Themes/Admin/img/file_add.png" CausesValidation="False" CommandName="AddNew"/>
</FooterTemplate>
<ItemTemplate>
<asp:ImageButton ID="lbtEdit" runat="server" ToolTip="Edit" ImageUrl="../App_Themes/Admin/img/edit.png" CausesValidation="False" CommandName="Edit"/>
<asp:ImageButton ID="lbtDelete" runat="server" ToolTip="Delete" ImageUrl="../App_Themes/Admin/img/delete.png" OnClientClick=" return confirm('Are you sure you want to delete this?'); " CausesValidation="False" CommandName="Delete"/>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<ItemTemplate>
<tr>
<td colspan="100%">
<div id='div<%# Eval("Id") %>' style="display: none; left: 15px; OVERFLOW: auto; position: relative; WIDTH: 98%">
<div id="forExport">
<asp:GridView ID="grvPayrollDetails"
EmptyDataText="No Records Found" CellPadding="5" ForeColor="#333333" GridLines="Both" AllowPaging="False"
runat="server" AutoGenerateColumns="False" DataKeyNames="PayrollID"
OnRowDataBound="grvPayrollDetails_RowDataBound" OnRowCreated="grvPayrollDetails_RowCreated">
<AlternatingRowStyle CssClass="GridStyle_AltRowStyle2"/>
<HeaderStyle CssClass="GridStyle_HeaderStyle2"/>
<RowStyle CssClass="GridStyle_RowStyle2"/>
<Columns >
<asp:TemplateField HeaderText="Mã NV">
<ItemTemplate>
<asp:Label ID="plEmpID" runat="server" Visible="false" Text='<%# Eval("EmpID").ToString() %>'></asp:Label>
<%#get_EmpCode(Eval("EmpID").ToString()) %><br/>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Tổng chi phí">
<ItemTemplate>
<asp:Label ID="lblTotalPaymentCost" runat="server" Text='<%#Format_Money(Eval("TotalPaymentCost").ToString()) %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
</div>
</div>
</td>
</tr>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
</td>
</tr>
</table>
这是剧本：
<script type="text/javascript">
function expandcollapse(obj, row) {
var div = document.getElementById(obj);
var img = document.getElementById("img" + obj);
if (div.style.display == "none") {
div.style.display = "block";
if (row == "alt") {
img.src = "../App_Themes/Admin/img/minus.png";
} else {
img.src = "../App_Themes/Admin/img/minus.png";
}
img.alt = "Close to view other Payroll info";
} else {
div.style.display = "none";
if (row == "alt") {
img.src = "../App_Themes/Admin/img/plus.png";
} else {
img.src = "../App_Themes/Admin/img/plus.png";
}
img.alt = "Expand to show Payroll Details";
}
}
</script>
<script type="text/javascript">
function AssignExportHTML() {
document.getElementById('<%=hidGridView.ClientID%>').value = htmlEscape(forExport.innerHTML);
}
function htmlEscape(str) {
return String(str)
.replace(/&/g, '&')
.replace(/"/g, '"')
.replace(/'/g, ''')
.replace(/</g, '<')
.replace(/>/g, '>');
}
</script>
我需要将嵌套的子gridview导出为excel并进行分组（小计，总计），但是当我导出分组行只是一个空白行时，我尝试使用此代码，但它无法使用嵌套的gridview 那怎么做，因为在调试时会出现空值错误。我认为因为Hidden Field值为null而我无法在Parent Gridview中获取div forExport。这是后面的代码：
public override void VerifyRenderingInServerForm(Control control)
{
/* Confirms that an HtmlForm control is rendered for the specified ASP.NET
server control at run time. */
}
protected void ExportExcel(object sender, EventArgs e)
{
grvPayroll.AllowPaging = false;
var grvPayrollDetails = new GridView();
for (var i = 0; i < grvPayroll.Rows.Count; i++)
{
grvPayrollDetails = (GridView) grvPayroll.Rows[i].FindControl("grvPayrollDetails");
}
Response.Clear();
Response.Buffer = true;
Response.AddHeader("content-disposition", "attachment;filename=PayrollExport.xls");
Response.Charset = "UTF-8";
Response.ContentType = "application/vnd.ms-excel";
using (var sw = new StringWriter())
{
grvPayrollDetails.AllowPaging = false;
BindGrid(SortField);
grvPayrollDetails.Font.Name = "Times New Roman";
grvPayrollDetails.BackColor = Color.Transparent;
grvPayrollDetails.GridLines = GridLines.Both;
grvPayrollDetails.HeaderStyle.VerticalAlign=VerticalAlign.Middle;
sw.Write(System.Web.HttpUtility.HtmlDecode(hidGridView.Value));
Response.Write(Regex.Replace(sw.ToString(), "(<a[^>]*>)|(</a>)", " ", RegexOptions.IgnoreCase));
Response.Flush();
Response.End();
}
}
我提到了这个链接：Exporting to Excel from GridView when grid changed by code behind
答案 0 :(得分：0)
要访问asp.net控件的ID，您必须使用 ClientID ，如下所示
document.getElementById('<%=hidGridView.ClientID%>').value = htmlEscape(document.getElementById("forExport").innerHTML);