How do I dynamically change a gridview hyperlinkfield

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I have gridview w/ a hyperlinkfield column. I am looking for some means of specifying the NavigateURL of the hyperlinkfield, based on the value in one of the other columns in the gridview. For instance, if databound column contains "car", the NavigateURL should be "~/myweb/car.aspx".........likewise, if column contains "truck", the NavURL should be "~/myweb/truck.aspx".

What I have tried:

Markup:
<asp:GridView ID="GridView2" runat="server" AllowPaging="True" AutoGenerateColumns="False" CellPadding="4" DataSourceID="SqlDataSource2" ForeColor="#333333" GridLines="None" OnSelectedIndexChanged="GridView2_SelectedIndexChanged" OnRowDataBound="GridView2_RowDataBound">
<alternatingrowstyle backcolor="White" forecolor="#284775">
<columns> <asp:CommandField ShowSelectButton="True" >
<HeaderStyle Width="100px" />

<asp:BoundField DataField="Column1" HeaderText="Analysis" ReadOnly="True" SortExpression="Column1">
<HeaderStyle Width="120px" />

<asp:BoundField DataField="testdate" DataFormatString="{0:d}" HeaderText="Test Date" ReadOnly="True" SortExpression="testdate" >
<HeaderStyle Width="100px" />

<asp:BoundField DataField="Date Out" DataFormatString="{0:d}" HeaderText="Date Out" ReadOnly="True" SortExpression="Date Out" >
<HeaderStyle Width="100px" />

<asp:BoundField DataField="FailureDate" DataFormatString="{0:d}" HeaderText="Failure Date" SortExpression="FailureDate" />
<asp:BoundField DataField="sampleid" HeaderText="Sample ID" ReadOnly="True" SortExpression="sampleid">
<itemstyle horizontalalign="Center">

<%--<asp:HyperLinkField HeaderText="SampleID" DataNavigateUrlFields="SampleID" DataNavigateUrlFormatString="~/Reports/LabDetail/ATPDetails?SampleID={0}" DataTextField="SampleID" SortExpression="SampleID"/>--%>

<asp:HyperLinkField NavigateUrl="~/Reports/LabDetail/ATPDetails.aspx" Text="View Report" />
<asp:TemplateField HeaderText="aaaa">
<itemtemplate>
<asp:HyperLink ID="HyperLink1" runat="server" NavigateUrl='~/bogus.aspx'>Contact

<editrowstyle backcolor="#999999">
<footerstyle backcolor="#5D7B9D" font-bold="True" forecolor="White">
<HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
<pagerstyle backcolor="#284775" forecolor="White" horizontalalign="Center">
<rowstyle backcolor="#F7F6F3" forecolor="#333333">
<SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" />
<sortedascendingcellstyle backcolor="#E9E7E2">
<sortedascendingheaderstyle backcolor="#506C8C">
<sorteddescendingcellstyle backcolor="#FFFDF8">
<sorteddescendingheaderstyle backcolor="#6F8DAE">

Code Attempt 1:
protected void GridView2_RowDataBound(object sender, GridViewRowEventArgs e)
{

if (row.Cells[1].Text == "ATP")
{
HyperLink hl = e.Row.FindControl("Hyperlink1") as HyperLink;
hl.NavigateUrl = "~/ Reports / LabDetail / ATPDetails.aspx";
}
if (row.Cells[1].Text == "Water")
{
HyperLink hl = e.Row.FindControl("Hyperlink1") as HyperLink;
hl.NavigateUrl = "~/ Reports / LabDetail / WaterDetails.aspx";
}

}

Code Attempt 2:
protected void GridView2_RowDataBound(object sender, GridViewRowEventArgs e)
{

foreach (GridViewRow row in GridView2.Rows)
{
if (row.Cells[1].Text == "ATP")
{
HyperLink hl = e.Row.FindControl("Hyperlink1") as HyperLink;
hl.NavigateUrl = "~/ Reports / LabDetail / ATPDetails.aspx";
}
if (row.Cells[1].Text == "Water")
{
HyperLink hl = e.Row.FindControl("Hyperlink1") as HyperLink;
hl.NavigateUrl = "~/ Reports / LabDetail / WaterDetails.aspx";
}
}

}

Posted 11-Aug-16 7:11am

martyres72

Updated 11-Aug-16 8:16am

v2

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Comments

Karthik_Mahalingam 11-Aug-16 13:16pm

what is the issue?

martyres72 11-Aug-16 13:33pm

the code behind is not updating the NavigateURL.

Karthik_Mahalingam 11-Aug-16 13:35pm

post the markup code for whole gridview

Karthik_Mahalingam 11-Aug-16 13:47pm

row.Cells[1].Text
this data belongs to "column1" ??

martyres72 11-Aug-16 13:48pm

yes.

martyres72 11-Aug-16 13:50pm

so essentially, my gridview is databound, and column 1 contains value that I want to dictate the NavigateURL

Karthik_Mahalingam 11-Aug-16 13:52pm

ok, might be you are not getting the right value in row.Cells[1].Text

martyres72 11-Aug-16 13:54pm

I'm good on the value, and I'm setting a textbox value w/ it to be sure.

martyres72 11-Aug-16 13:59pm

well I guess this not necessarily true, because I'm getting the value in textbox on different event.

Karthik_Mahalingam 11-Aug-16 14:01pm

i have tested your code with some dummy data, it works fine. might be you are missing something.

martyres72 11-Aug-16 14:02pm

good to know. I guess I'll keep looking.

martyres72 11-Aug-16 14:01pm

I've even tried wrapping the code behind in this:
foreach (GridViewRow row in GridView2.Rows)

It gets further, but then throws exception for some other problem

Karthik_Mahalingam 11-Aug-16 14:03pm

dont use foreach inside GridView2_RowDataBound
place a break point and check the data in cell 1

martyres72 11-Aug-16 14:13pm

I made some small changes, and is working now. I am using the "foreach". is that bad practice?

Karthik_Mahalingam 11-Aug-16 14:14pm

never use foreach
post the code, i will correct it

martyres72 11-Aug-16 14:14pm

I added working code as the solution. See any issues?

Karthik_Mahalingam 11-Aug-16 14:16pm

check my solution, it should work

martyres72 11-Aug-16 14:19pm

it works perfectly. Thank you for the help.

Karthik_Mahalingam 11-Aug-16 14:20pm

welcome

martyres72 11-Aug-16 13:47pm

my code isn't pasting in right. Here is markup for the hyperlink I am trying to update:
<asp:TemplateField HeaderText="aaaa">
<itemtemplate>
<asp:HyperLink ID="HyperLink1" runat="server" NavigateUrl='~/bogus.aspx'>Contact

Karthik_Mahalingam 11-Aug-16 13:49pm

paste it Create a new fiddle - JSFiddle[^] and share the link

martyres72 11-Aug-16 13:55pm

https://jsfiddle.net/3nwdcoL9/

2 solutions

Solution 2

final code (working)
protected void GridView2_RowDataBound(object sender, GridViewRowEventArgs e)
{

foreach (GridViewRow row in GridView2.Rows)
{
if (row.Cells[1].Text == "ATP")
{
HyperLink hl = row.FindControl("HyperLink1") as HyperLink;
hl.NavigateUrl = "~/Reports/LabDetail/ATPDetails.aspx";
}
if (row.Cells[1].Text == "Water")
{
HyperLink hl = row.FindControl("HyperLink1") as HyperLink;
hl.NavigateUrl = "~/Reports/LabDetail/WaterDetails.aspx";
}

}

}

Posted 11-Aug-16 8:13am

martyres72

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Karthik_Mahalingam · Accepted Answer · 2016-08-11T08:16:00

try this

C#

protected void GridView2_RowDataBound(object sender, GridViewRowEventArgs e)
       {
           if (e.Row.RowType == DataControlRowType.DataRow)
           {
               string text = e.Row.Cells[1].Text;
               HyperLink hl = e.Row.FindControl("Hyperlink1") as HyperLink;
               if (hl != null)
               {
                   if (text == "ATP")
                       hl.NavigateUrl = "~/Reports/LabDetail/ATPDetails.aspx";
                   else if (text == "Water")
                       hl.NavigateUrl = "~/Reports/LabDetail/WaterDetails.aspx";
               }
           }
       }