问题
How does FindControl method works if I need to find any Control which is inside GridView Template, more specifically ItemTemplate?
I have a hyperlink but it is not able to find the same.
Question updated with code
GridView Code is below:
<asp:GridView ID=\"grvYourOpportunities\" runat=\"server\" AllowPaging=\"True\" AutoGenerateColumns=\"False\"
DataKeyNames=\"ID#,B,H\" PageSize=\"20\" CellPadding=\"4\" ForeColor=\"#333333\" GridLines=\"Both\"
OnRowDataBound=\"grvYourOpt_RowDataBound\">
<HeaderStyle BackColor=\"#5D7B9D\" Font-Bold=\"True\" ForeColor=\"White\" />
<RowStyle BackColor=\"#F7F6F3\" ForeColor=\"#333333\" />
<Columns>
<asp:TemplateField>
<HeaderTemplate>
i
</HeaderTemplate>
<ItemTemplate>
<%# Eval(\"i\") %>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
H
</HeaderTemplate>
<ItemTemplate>
<%--<a href=\"javascript:ShowChildGrid(\'div<%# Eval(\"ID#\") %>\');\">
<img id=\"imgdiv<%# Eval(\"ID#\") %>\" alt=\"Click\" border=\"0\" src=\"plus.gif\" runat=\"server\" /> </a> --%>
<asp:HyperLink runat=\"server\" ID=\"hlPlus\" ImageUrl=\"~/plus.gif\"></asp:HyperLink>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
B
</HeaderTemplate>
<ItemTemplate>
<%--<%# Eval(\"B\") %>--%>
<a href=\"javascript:ShowChildGridForBCol(\'div1<%# Eval(\"ID#\") %>\');\">
<img id=\"imgdiv1<%# Eval(\"ID#\") %>\" alt=\"Click here\" border=\"0\" src=\"tempY.png\" />
</a>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
ID.Nr.
</HeaderTemplate>
<ItemTemplate>
<%# Eval(\"ID#\")%>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
Entry Date
</HeaderTemplate>
<ItemTemplate>
<%# Eval(\"Entry Date\") %>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderStyle-Width=\"20px\" ItemStyle-Width=\"20px\">
<HeaderTemplate>
BU
</HeaderTemplate>
<ItemTemplate>
<%# Eval(\"BU\")%>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
BE
</HeaderTemplate>
<ItemTemplate>
<%# Eval(\"BE\")%>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
Product Family
</HeaderTemplate>
<ItemTemplate>
<%# Eval(\"Product Family\")%>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
Project Name
</HeaderTemplate>
<ItemTemplate>
<%# Eval(\"Project Name\")%>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
SOP
</HeaderTemplate>
<ItemTemplate>
<%# Eval(\"SOP\")%>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
Award Date
</HeaderTemplate>
<ItemTemplate>
<%# Eval(\"Award Date\")%>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
Milestone Next Date
</HeaderTemplate>
<ItemTemplate>
<%# Eval(\"Milestone Next Date\")%>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
Contract Status
</HeaderTemplate>
<ItemTemplate>
<%# Eval(\"Contract Status\")%>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
Prob.Of Success
</HeaderTemplate>
<ItemTemplate>
<%# Eval(\"ProbSuccess\")%>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
Key Account
</HeaderTemplate>
<ItemTemplate>
<%# Eval(\"Key Account\")%>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
Sales SubRegion
</HeaderTemplate>
<ItemTemplate>
<%# Eval(\"Sales SubRegion\")%>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
Growth
</HeaderTemplate>
<ItemTemplate>
<%# Eval(\"Growth\")%>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
Sales p.a.OE mio$
</HeaderTemplate>
<ItemTemplate>
<%# Eval(\"SalesOE\")%>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
Sales p.a.AM mio$
</HeaderTemplate>
<ItemTemplate>
<%# Eval(\"SalesAM\")%>
</ItemTemplate>
</asp:TemplateField>
<%--GridView 2, 3--%>
<asp:TemplateField>
<ItemTemplate>
<tr>
<td align=\"left\" style=\"margin-left: 10px;\" colspan=\"5\">
<div id=\"div<%# Eval(\"ID#\") %>\" style=\"display: none; position: relative; left: 110px;\">
<asp:GridView ID=\"GridView2\" runat=\"server\" Width=\"40%\" AutoGenerateColumns=\"false\"
DataKeyNames=\"Entry Date\" EmptyDataText=\"No orders for this customer.\" CellPadding=\"0\"
ForeColor=\"#333333\" GridLines=\"Both\">
<HeaderStyle BackColor=\"#5D7B9D\" Font-Bold=\"True\" ForeColor=\"White\" />
<RowStyle BackColor=\"#F7F6F3\" ForeColor=\"#333333\" />
<HeaderStyle CssClass=\"header\" />
<RowStyle CssClass=\"row\" />
<Columns>
<asp:TemplateField>
<HeaderTemplate>
</HeaderTemplate>
<ItemTemplate>
<%# Eval(\"ID#\")%>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
</HeaderTemplate>
<ItemTemplate>
<%# Eval(\"Entry Date\") %>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
</HeaderTemplate>
<ItemTemplate>
<%# Eval(\"ID#\")%>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField ItemStyle-Wrap=\"false\">
<HeaderTemplate>
</HeaderTemplate>
<ItemTemplate>
<%# Eval(\"Other Text\") %>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
</div>
</td>
</tr>
<tr>
<td align=\"left\" colspan=\"19\">
<div id=\"div1<%# Eval(\"ID#\") %>\" style=\"display: none; position:relative; left: 110px;\">
<asp:GridView ID=\"GridView3\" runat=\"server\" AutoGenerateColumns=\"false\" DataKeyNames=\"Entry Date\"
EmptyDataText=\"No orders for this customer.\" CellPadding=\"0\" ForeColor=\"#333333\"
GridLines=\"Both\" Width=\"100%\">
<HeaderStyle BackColor=\"#5D7B9D\" Font-Bold=\"True\" ForeColor=\"White\" />
<RowStyle BackColor=\"#F7F6F3\" ForeColor=\"#333333\" />
<%--<HeaderStyle CssClass=\"header\" />
<RowStyle CssClass=\"row\" />--%>
<Columns>
<%--<asp:TemplateField>
<HeaderTemplate>
</HeaderTemplate>
<ItemTemplate>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
</HeaderTemplate>
<ItemTemplate>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
</HeaderTemplate>
<ItemTemplate>
</ItemTemplate>
</asp:TemplateField>--%>
<asp:TemplateField>
<HeaderTemplate>
</HeaderTemplate>
<ItemTemplate>
<%# Eval(\"ID#\")%>
</ItemTemplate>
</asp:TemplateField>
<%-- <asp:TemplateField>
<HeaderTemplate>
</HeaderTemplate>
<ItemTemplate>
<%# Eval(\"Entry Date\") %>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderStyle-Width=\"20px\" ItemStyle-Width=\"20px\">
<HeaderTemplate>
</HeaderTemplate>
<ItemTemplate>
<%# Eval(\"BU\")%>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
</HeaderTemplate>
<ItemTemplate>
<%# Eval(\"BE\")%>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
</HeaderTemplate>
<ItemTemplate>
<%# Eval(\"Product Family\")%>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
</HeaderTemplate>
<ItemTemplate>
<%# Eval(\"Project Name\")%>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
</HeaderTemplate>
<ItemTemplate>
<%# Eval(\"SOP\")%>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
</HeaderTemplate>
<ItemTemplate>
<%# Eval(\"Award Date\")%>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
</HeaderTemplate>
<ItemTemplate>
<%# Eval(\"Milestone Next Date\")%>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
</HeaderTemplate>
<ItemTemplate>
<%# Eval(\"Contract Status\")%>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
</HeaderTemplate>
<ItemTemplate>
<%# Eval(\"ProbSuccess\")%>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
</HeaderTemplate>
<ItemTemplate>
<%# Eval(\"Key Account\")%>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
</HeaderTemplate>
<ItemTemplate>
<%# Eval(\"Sales SubRegion\")%>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
</HeaderTemplate>
<ItemTemplate>
<%# Eval(\"Growth\")%>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
</HeaderTemplate>
<ItemTemplate>
<%# Eval(\"SalesOE\")%>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
</HeaderTemplate>
<ItemTemplate>
<%# Eval(\"SalesAM\")%>
</ItemTemplate>
</asp:TemplateField>--%>
</Columns>
</asp:GridView>
</div>
</td>
</tr>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
The RowDataBound event of the parent GridView is as below;
Protected void grvYourOpt_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
string colId = grvYourOpportunities.DataKeys[e.Row.RowIndex].Values[0].ToString();
string colB = grvYourOpportunities.DataKeys[e.Row.RowIndex].Values[1].ToString();
string colH = grvYourOpportunities.DataKeys[e.Row.RowIndex].Values[2].ToString();
#region \"Commented Code for Col.B\"
//if (colB == \"Y\")
//{
// e.Row.Cells[2].Text = \"<img src=\'tempY.png\'>\";
//}
//else
//{
// e.Row.Cells[2].Text = \"<img src=\'tempN.png\'>\";
//}
#endregion
#region \"Commented code for Col.H\"
if (colH == \"1\")
{
e.Row.Cells[1].Text = string.Empty;
//e.Row.Cells[1].Text = \"<a href=\'\'> <img id=\'13\' alt=\'Click\' border=\'0\' src=\'plus.gif\'/> </a>\";
string js = string.Format(\"javascript:ShowChildGrid(\'div{0}\');\", colId);
HyperLink lnk = (HyperLink)e.Row.FindControl(\"hlPlus\");
if (lnk!=null)
{
lnk.NavigateUrl = js;
lnk.ImageUrl = \"plus.gif\";
lnk.Visible = true;
}
//Page.ClientScript.RegisterStartupScript(this.GetType(), \"HCol\", \"ShowChildGrid(\"+ colId + \");\", true);
}
else
{
e.Row.Cells[1].Text = string.Empty;
e.Row.Cells[1].Text = \"\";
}
#endregion
DataTable dt1 = new DataTable();
DataTable dt2 = new DataTable();
DataRow dr1 = null;
DataRow dr2 = null;
DataRow dr3 = null;
DataRow dr4 = null;
DataRow dr5 = null;
DataRow dr7 = null;
DataRow r = dt1.NewRow();
DataSet ds1 = new DataSet();
DataSet ds2 = new DataSet();
dt1.TableName = \"Opportunity1\";
dt1.Columns.Add(new System.Data.DataColumn(\"ID#\", typeof(System.String)));
dt1.Columns.Add(new System.Data.DataColumn(\"Entry Date\", typeof(System.String)));
dt1.Columns.Add(new System.Data.DataColumn(\"Other Text\", typeof(System.String)));
ds1.Tables.Add(dt1);
dt2.Columns.Add(new System.Data.DataColumn(\"ID#\", typeof(System.String)));
dt2.Columns.Add(new System.Data.DataColumn(\"Entry Date\", typeof(System.String)));
dt2.Columns.Add(new System.Data.DataColumn(\"BU\", typeof(System.String)));
dt2.Columns.Add(new System.Data.DataColumn(\"BE\", typeof(System.String)));
dt2.Columns.Add(new System.Data.DataColumn(\"Product Family\", typeof(System.String)));
dt2.Columns.Add(new System.Data.DataColumn(\"Project Name\", typeof(System.String)));
dt2.Columns.Add(new System.Data.DataColumn(\"SOP\", typeof(System.String)));
dt2.Columns.Add(new System.Data.DataColumn(\"Award Date\", typeof(System.String)));
dt2.Columns.Add(new System.Data.DataColumn(\"Milestone Next Date\", typeof(System.String)));
dt2.Columns.Add(new System.Data.DataColumn(\"Contract Status\", typeof(System.String)));
dt2.Columns.Add(new System.Data.DataColumn(\"ProbSuccess\", typeof(System.String)));
dt2.Columns.Add(new System.Data.DataColumn(\"Key Account\", typeof(System.String)));
dt2.Columns.Add(new System.Data.DataColumn(\"Sales SubRegion\", typeof(System.String)));
dt2.Columns.Add(new System.Data.DataColumn(\"Growth\", typeof(System.String)));
dt2.Columns.Add(new System.Data.DataColumn(\"SalesOE\", typeof(System.String)));
dt2.Columns.Add(new System.Data.DataColumn(\"SalesAM\", typeof(System.String)));
ds2.Tables.Add(dt2);
dr2 = dt1.NewRow();
dr3 = dt1.NewRow();
dr4 = dt1.NewRow();
dr5 = dt1.NewRow();
dr1[\"ID#\"] = \"\";
dr2[\"ID#\"] = \"\";
dr3[\"ID#\"] = \"\";
dr4[\"ID#\"] = \"\";
dr5[\"ID#\"] = \"\";
dr1[\"Entry Date\"] = \"18/01/2010\";
dr2[\"Entry Date\"] = \"19/01/2010\";
dr3[\"Entry Date\"] = \"20/01/2010\";
dr4[\"Entry Date\"] = \"21/01/2010\";
dr5[\"Entry Date\"] = \"14/01/2010\";
dr1[\"Other Text\"] = \"17:25CET changed by\"; // - product family: ABS, Milestone Date: 23.02.1022, Contract Status: Signed, Probability of success: 100%\";
dr2[\"Other Text\"] = \"18:44CET changed by\"; //- product family: ABS, Milestone Date: 23.02.1022, Contract Status: Signed, Probability of success: 100%\";
dr3[\"Other Text\"] = \"19:25CET changed by\"; //- product family: ABS, Milestone Date: 23.02.1022, Contract Status: Signed, Probability of success: 100%\";
dr4[\"Other Text\"] = \"14:25CET changed by\"; //- product family: ABS, Milestone Date: 23.02.1022, Contract Status: Signed, Probability of success: 100%\";
dr5[\"Other Text\"] = \"11:25CET changed by\"; //- product family: ABS, Milestone Date: 23.02.1022, Contract Status: Signed, Probability of success: 100%\";
dt1.Rows.Add(dr1);
dt1.Rows.Add(dr2);
dt1.Rows.Add(dr3);
dt1.Rows.Add(dr4);
dt1.Rows.Add(dr5);
GridView gv12 = (GridView)e.Row.FindControl(\"GridView2\");
gv12.DataSource = ds1.Tables[0];
gv12.DataBind();
for (int i = 0; i < gv12.Rows.Count; i++)
{
gv12.RowStyle.BackColor = System.Drawing.Color.Gray;
}
dr7 = dt2.NewRow();
dr7[\"ID#\"] = \"11-0101\";
dr7[\"Entry Date\"] = \"19/01/2010\";
dr7[\"BU\"] = \"VDC\";
dr7[\"BE\"] = \"ASES\";
dr7[\"Product Family\"] = \"Car Air Systems\";
dr7[\"Project Name\"] = \"Example\";
dr7[\"SOP\"] = \"09/08/2011\";
dr7[\"Award Date\"] = \"10/2011\";
dr7[\"Milestone Next Date\"] = System.DateTime.Today.ToString(\"dd.MM.yyyy\");
dr7[\"Contract Status\"] = \"won\";
dr7[\"ProbSuccess\"] = \"70%\";
dr7[\"Key Account\"] = \"E-Paccar\";
dr7[\"Sales SubRegion\"] = \"North America\";
dr7[\"Growth\"] = \"10%\";
dr7[\"SalesOE\"] = \"150\";
dr7[\"SalesAM\"] = \"18\";
dt2.Rows.Add(dr7);
GridView gv13 = (GridView)e.Row.FindControl(\"GridView3\");
gv13.DataSource = ds2.Tables[0];
gv13.DataBind();
}
}
The hyperlink hlPlus is a hyperlink field inside GridView\'s Template Field(Item Template).
回答1:
Try this:
foreach(GridViewRow row in GridView1.Rows) {
if(row.RowType == DataControlRowType.DataRow) {
HyperLink myHyperLink = row.FindControl("myHyperLinkID") as HyperLink;
}
}
If you are handling RowDataBound event, it's like this:
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if(e.Row.RowType == DataControlRowType.DataRow)
{
HyperLink myHyperLink = e.Row.FindControl("myHyperLinkID") as HyperLink;
}
}
回答2:
You can use this code to find HyperLink in GridView. Use of e.Row.Cells[0].Controls[0] to find First position of control in GridView.
protected void AspGrid_RowDataBound(object sender, GridViewRowEventArgs e)
{
if(e.Row.RowType == DataControlRowType.DataRow)
{
DataRowView v = (DataRowView)e.Row.DataItem;
if (e.Row.Cells.Count > 0 && e.Row.Cells[0] != null && e.Row.Cells[0].Controls.Count > 0)
{
HyperLink link = e.Row.Cells[0].Controls[0] as HyperLink;
if (link != null)
{
link.Text = "Edit";
}
}
}
}
回答3:
I have done it accessing the controls inside the cell control. Find in all control collections.
ControlCollection cc = (ControlCollection)e.Row.Controls[1].Controls;
Label lbCod = (Label)cc[1];
回答4:
protected void gvTurnos_RowDataBound(object sender, GridViewRowEventArgs e)
{
try
{
if (e.Row.RowType == DataControlRowType.EmptyDataRow)
{
LinkButton btn = (LinkButton)e.Row.FindControl("btnAgregarVacio");
if (btn != null)
{
btn.Visible = rbFiltroEstatusCampus.SelectedValue == "1" ? true : false;
}
}
}
catch (Exception ex)
{
throw ex;
}
}
回答5:
Try with below code.
Like GridView in LinkButton, Label, HtmlAnchor and HtmlInputControl.
<asp:GridView ID="mainGrid" runat="server" AutoGenerateColumns="false" CssClass="table table-bordered table-hover tablesorter"
OnRowDataBound="mainGrid_RowDataBound" EmptyDataText="No Data Found.">
<Columns>
<asp:TemplateField HeaderText="HeaderName" HeaderStyle-HorizontalAlign="Center" ItemStyle-HorizontalAlign="Center">
<ItemTemplate>
<asp:Label runat="server" ID="lblName" Text=' <%# Eval("LabelName") %>'></asp:Label>
<asp:LinkButton ID="btnLink" runat="server">ButtonName</asp:LinkButton>
<a href="javascript:void(0);" id="btnAnchor" runat="server">ButtonName</a>
<input type="hidden" runat="server" id="hdnBtnInput" value='<%#Eval("ID") %>' />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
Handling RowDataBound event,
protected void mainGrid_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
Label lblName = (Label)e.Row.FindControl("lblName");
LinkButton btnLink = (LinkButton)e.Row.FindControl("btnLink");
HtmlAnchor btnAnchor = (HtmlAnchor)e.Row.FindControl("btnAnchor");
HtmlInputControl hdnBtnInput = (HtmlInputControl)e.Row.FindControl("hdnBtnInput");
}
}
回答6:
If your GridView is databond, make an index column in the resultset you retrive like this:
select row_number() over(order by YourIdentityColumn asc)-1 as RowIndex, * from YourTable where [Expresion]
In the command control you want to use make the value of CommandArgument property equal to the row index of the DataSet table RowIndex like this:
<asp:LinkButton ID="lbnMsgSubj" runat="server" Text='<%# Eval("MsgSubj") %>' Font-Underline="false" CommandArgument='<%#Eval("RowIndex") %>' />
Use the OnRowCommand event to fire on clicking the link button like this:
<asp:GridView ID="gvwStuMsgBoard" runat="server" AutoGenerateColumns="false" GridLines="Horizontal" BorderColor="Transparent" Width="100%" OnRowCommand="gvwStuMsgBoard_RowCommand">
Finally the code behind you can then do whatever you like when the event is triggered like this:
protected void gvwStuMsgBoard_RowCommand(object sender, GridViewCommandEventArgs e)
{
Panel pnlMsgBody = (Panel)gvwStuMsgBoard.Rows[Convert.ToInt32(e.CommandArgument)].FindControl("pnlMsgBody");
if(pnlMsgBody.Visible == false)
{
pnlMsgBody.Visible = true;
}
else
{
pnlMsgBody.Visible = false;
}
}
回答7:
string textboxID;
string da;
textboxID = "ctl00$MainContent$grd$ctl" + (grd.Columns.Count + j).ToString() + "$txtDyna" + (k).ToString();
textboxID= ctl00$MainContent$grd$ctl12$ctl00;
da = Request.Form(textboxID);
来源：https://stackoverflow.com/questions/6873973/how-to-find-control-in-templatefield-of-gridview