如何格式化HyperLinkField？已尝试多种方法仍未解决

Hey there, let's work through this HyperLinkField navigation issue you're facing! I see you've tried tweaking DataNavigateUrlFormatString and switching to NavigateUrl without luck—let's break down some fixes and also cover the return link for your target page.

1. Double-check your binding and path basics #

First, let's rule out the simplest issues:

• Confirm the PONumber field exists in your data source and has no typos (ASP.NET is case-sensitive here!)
• Test the relative path ../PurchaseOrder/PurchaseOrderInsert.aspx directly in your browser to make sure it leads to the correct page (relative paths depend on your current page's location in the folder structure)
• Temporarily set DataTextField="PONumber" to see if the correct order number displays on the page—this will confirm your field binding is working as expected

2. Explicitly configure the HyperLinkField #

Sometimes adding a small explicit setting can fix hidden binding quirks. Try updating your control like this:

<asp:HyperLinkField 
    DataNavigateUrlFields="PONumber" 
    DataNavigateUrlFormatString="../PurchaseOrder/PurchaseOrderInsert.aspx?PurchaseOrderID={0}" 
    DataTextField="Description" 
    HeaderText="Description" 
    SortExpression="Description"
    Target="_self" <!-- Ensures navigation happens in the current window (default, but explicit avoids surprises) -->
/>

3. Switch to a TemplateField for full control #

If the HyperLinkField still won't cooperate, using a TemplateField to build the link manually is more reliable:

<asp:TemplateField HeaderText="Description" SortExpression="Description">
    <ItemTemplate>
        <a href='../PurchaseOrder/PurchaseOrderInsert.aspx?PurchaseOrderID=<%# Eval("PONumber") %>'>
            <%# Eval("Description") %>
        </a>
    </ItemTemplate>
</asp:TemplateField>

This bypasses any automatic binding logic that might be causing issues and gives you direct control over the link.

4. Add the return link to your target page #

For the PurchaseOrderInsert.aspx return functionality, you can use Request.UrlReferrer to get the previous page's address. Here are two options:

HTML Link Version

<a href='<%= Request.UrlReferrer?.ToString() ?? "../YourDefaultPage.aspx" %>'>Back to List</a>

The ?? "../YourDefaultPage.aspx" acts as a fallback if there's no referrer (e.g., if someone navigates directly to the insert page).

Button Version (with code-behind)

Add the button to your ASPX:

<asp:Button ID="btnBackToList" runat="server" Text="Back to List" OnClick="btnBackToList_Click" />

Then add this code to your code-behind file:

protected void btnBackToList_Click(object sender, EventArgs e)
{
    if (Request.UrlReferrer != null)
    {
        Response.Redirect(Request.UrlReferrer.ToString());
    }
    else
    {
        // Fallback to your default page if no referrer exists
        Response.Redirect("../YourDefaultPage.aspx");
    }
}

内容的提问来源于stack exchange，提问作者user2516641