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cross page posting and validation problems

I have a page that uses a customvalidator, so it does some server-side validation and I also put a PostBackUrl on the submit buttom. problem occurs that when i click the buttom, regardless if the validation failed or succeeded, it posts to the page. now i've read that i can just do PreviousPage.IsValid in the form_load event of the posted page to see if its valid, but how do I return to the previous page with the information intact...

///// REGISTER.ASPX //////

<asp:RequiredFieldValidator ID="formShieldRequiredVd" runat="server" ControlToValidate="formShieldTx"
ErrorMessage="Anti-Hacker Text Required" ForeColor="InactiveCaption">*</asp:RequiredFieldValidator> <asp:CustomValidator
ID="formShieldDontMatchVd" runat="server"
ControlToValidate="formShieldTx" ErrorMessage="Anti-Hacker text does not match"
ForeColor="InactiveCaption" OnServerValidate="formShieldDontMatchVd_ServerValidate" Enabled="true">*</asp:CustomValidator>
<asp:Button ID="okBt" runat="server" Text="Register" PostBackUrl="~/emailInUse.aspx" />

protected void formShieldDontMatchVd_ServerValidate(object source, ServerValidateEventArgs args)
{
try
{
args.IsValid = (formShieldTx.Text.CompareTo(
this.formShield.Text) == 0);
}
catch (Exception)
{
args.IsValid = false;
}
}

////// emailInUse.aspx //////
protected void Page_Load(object sender, EventArgs e)
{
if (PreviousPage != null && !PreviousPage.IsValid)
{
// need to redirect back to the previous page with data intact somehow and have the validation error displayed
}
}

e1v

This is what I did in a situation like yours, I only had one textbox (TextBoxEmail) on the previous page (Register.aspx) that had to be restored.

in Page_Load of the destination page:

if (PreviousPage != null && !PreviousPage.IsValid)
{
Session["TextBoxEmail"] = ((TextBox)PreviousPage.FindControl("TextBoxEmail")).Text;
Response.Redirect("~/Register.aspx", false);
}

then in page_Load of Register.aspx:
if (Session["TextBoxEmail"] != null)
{
TextBoxEmail.Text = (string)Session["TextBoxEmail"];
Session.Remove("TextBoxEmail");
Validate();
}

gregg1ep00

Can you validate on the current page, and then if validation succeeds, then do a Response.Redirect() or a Server.Transfer() to your new page, instead of validating on a different page?

mbosico

ASKER

gregg1ep00:

I'd like it to be validated on the client side, but I don't know how because its a custom validation, I dont know how to get to the controls fields to check against what they type in.

formShieldTx.Text.CompareTo(this.formShield.Text) == 0)

ASKER CERTIFIED SOLUTION

gregg1ep00

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