Romil N Romil N - 3 months ago 5
ASP.NET (C#) Question

How to find control in TemplateField of GridView?

How does Find control method works if i need to find any control which is inside gridview template, more specifically Item Template??

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)

Answer

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;
    }
}