Validation Breaks Postback (C#)

[spamguy]

Before I added validation features, I had a few controls that made use of postback: for example, click a checkbox to make Panel1 and subcontrols visible.

I've since added clientside and serverside validation and suddenly postback is broken. Only if 'Submit' is clicked does the form update with changes that should have occured automatically.

Page_Load() has nothing involving IsPostBack, so I have no idea what else could be breaking it.

[nateraaaa]

Before I added validation features, I had a few controls that made use of postback: for example, click a checkbox to make Panel1 and subcontrols visible.

I've since added clientside and serverside validation and suddenly postback is broken. Only if 'Submit' is clicked does the form update with changes that should have occured automatically.

Page_Load() has nothing involving IsPostBack, so I have no idea what else could be breaking it.

Post the code for your page_load event and your checkChanged event. Maybe seeing the code will give us a better idea of what is going on. (Please surround your code with code tags).

thanks
Nathan

[spamguy]

Post the code for your page_load event and your checkChanged event. Maybe seeing the code will give us a better idea of what is going on. (Please surround your code with code tags).

thanks
Nathan

I normally supply code with my questions, but as I said, I didn't find anything of worth in Page_Load(), so I left it off. But you're welcome to it. As a bonus is a DropDownList also not responding to postback; it should enable a TextBox when 'Other' is chosen:

protected void Page_Load(object sender, EventArgs e)
{
    // enable/disable secondary contact fields based on checkbox status
    Panel1.Enabled = cbSecondaryContact.Checked;
}
 
protected void cbSecondaryContact_CheckedChanged(object sender, EventArgs e)
{
    Panel1.Enabled = cbSecondaryContact.Checked;
}
 
protected void ddlOrganisation_SelectedIndexChanged(object sender, EventArgs e)
{
    txtOther.Enabled = ddlOrganisation.SelectedValue == "Other" ? true : false;
}
 

[nateraaaa]

You have the AutoPostBack property of these controls set to true correct?

Nathan

[spamguy]

You have the AutoPostBack property of these controls set to true correct?

Nathan

Right. Since these controls were working as expected earlier, AutoPostBack was and still is set to true.

[nateraaaa]

Right. Since these controls were working as expected earlier, AutoPostBack was and still is set to true.

What kind of validation are you doing? Are you using any required field validators or any other .NET validation controls? How are you displaying the validation to the user?

Nathan

[spamguy]

It's a mixture of RequiredFieldValidators and RegularExpressionValidators. Any fields with errors have red asterisks appear beside them; errors are listed in the ValidationSummary up top:

<form id="form1" method="POST" action="" runat="server">
        <div style="width:100%">
            <asp:ValidationSummary ID="ValidationSummary1" CssClass="errorMessage" runat="server" ForeColor="Black" /><br />
            <asp:Panel ID="noHTMLPanel" runat="server" CssClass="errorMessage" Visible="false">HTML tags are not permitted in the form submission.</asp:Panel>
        </div>
        <p>
            <label for="txtFirstName">First Name: </label>
            <asp:TextBox ID="txtFirstName" Width="225px" runat="server"></asp:TextBox>
            <asp:RequiredFieldValidator ID="vdFirstName" runat="server" ControlToValidate="txtFirstName" ErrorMessage="&quot;First Name&quot; is required." Text="*" />
            <br />
 
            <label for="txtLastName">Last Name: </label>
            <asp:TextBox ID="txtLastName" Width="225px" runat="server"></asp:TextBox>
            <asp:RequiredFieldValidator ID="vdLastName" runat="server" ControlToValidate="txtLastName" ErrorMessage="&quot;Last Name&quot; is required." Text="*" />
            <br />
 
            <label for="txtEmail">Email Address: </label>
            <asp:TextBox ID="txtEmail" Width="225px" runat="server"></asp:TextBox>
            <asp:RequiredFieldValidator ID="vdEmail" runat="server" ControlToValidate="txtEmail" ErrorMessage="&quot;Email&quot; is required." Text="*" />
            <asp:RegularExpressionValidator ID="vdREEmail" runat="server" ControlToValidate="txtEmail" Text="*" ErrorMessage="The email address is not in a valid format." ValidationExpression="\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*" />
            <br />
    </p>
 
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