Integrating Query String Parameters into GridView Item Templates

Within my gridview, I have a hyperlink located in the first column. When this hyperlink is clicked, the user is directed to Vendor.aspx. I now need to pass the consumer ID (from the clicked row) as a query string to Vendor.aspx.

What is the most effective approach to accomplish this? Is there a way to handle this using only markup code?

  <asp:GridView ID="grdConsumers" runat="server" AutoGenerateColumns="False" 
                EnableViewState="True" >
                <Columns>

                   <asp:TemplateField HeaderText="ConsumerID" SortExpression="ConsumerID" >
                    <ItemTemplate>
                        <asp:HyperLink ID="lnkConsumerID" href="Vendor.aspx" runat="server"><%# Eval("ConsumerID")%></asp:HyperLink>
                    </ItemTemplate>
                    </asp:TemplateField>



                    <asp:BoundField HeaderText="Status" DataField="Status" SortExpression="Status"></asp:BoundField>
                </Columns>
            </asp:GridView>

READINGS:

  1. Set Gridview DataNavigateUrlFormatString Dynamically inside User Control(ASCX)

  2. How do I add "&Source" to DataNavigateUrlFormatString?

  3. Select row in GridView with JavaScript

  4. How to bind the URL of a GridView HyperLinkField when the bound value contains a colon?

  5. asp.net gridview DataNavigateUrlFormatString from DataSource

Answer №1

Consider utilizing the DataNavigateUrlFormatString

<ItemTemplate>
    <asp:HyperLinkField DataNavigateUrlFields="ConsumerID" DataTextField="ConsumerID" DataNavigateUrlFormatString="Vendor.aspx?id={0}" />
</ItemTemplate>

By using this approach, you can avoid using Eval() and avoid issues with single/double quotes when inserting it into your href.

Feel free to replace the DataTextField if needed - the ConsumerID was chosen for consistency with the provided example.

Answer №2

To update a hyperlink in a gridview within an .aspx file, follow these steps:

<asp:HyperLink ID="lnkConsumerID" runat="server" Text='<%# Eval("ConsumerID")%>' />

Next, in the code-behind, create a RowDataBound event handler:

protected void grdConsumers_RowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType != DataControlRowType.DataRow) return;
    var hlnkhlnk = (HyperLink)e.Row.FindControl("lnkConsumerID");
    if (hlnkhlnk != null)
    {
        hlnkhlnk.NavigateUrl = "Vendor.aspx" + "?ConsumerID=" + hlnkhlnk.Text;
    }
}

Hopefully, these instructions prove helpful in updating your hyperlink.

Answer №3

To achieve the same result, utilize the Grid view Item Data Bound Event

protected void grdConsumers_ItemDataBound(object sender,DataGridItemEventArgs e)
{
    if(e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
    {
        // Obtain the consumerId here     
        ((HyperLink)e.Item.FindControl("Edit")).NavigateUrl = "Vendor.aspx?id=" + consumerId
    }
}

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