Textbox with textmode="multiline" C# ASP.NET 2010

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Friends,
I am using C# ASP.NET 2010

I have a Textbox with TextMode="MultiLine" and need to validate using
<asp:regularexpressionvalidator>

of course it validates, but doesn't move to next view on clicking button after validation

please help me.
thanks
ravi

What I have tried:

I tried this
In the design page....

ASP.NET

<asp:textbox id="txtdetail" runat="server" autopostback="false" height="56px" width="240px" textmode="MultiLine" maxlength="200" required="">

<asp:regularexpressionvalidator id="RequiredFieldValidator28" runat="server" errormessage="Alphabet, Numbers and Space are allowed." controltovalidate="txtdetail" validationexpression="^[a-zA-Z0-9 ,]+$">


<asp:button id="Button3" runat="server" onclick="BtnGoToOtherDetail_Click" text="To Other Detail">

In the CodeBehind......

C#

protected void BtnGoToOtherDetail_Click(object sender, EventArgs e)
{
    MultiView1.ActiveViewIndex = 2;
}

Posted 25-Jul-21 1:23am

ravitv

Updated 5-Aug-21 23:14pm

Richard Deeming

v2

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SeeSharp2 27-Jul-21 13:41pm

1. Format the question so that we can read it.
2. What do you mean it does validate but doesn't move to next view?

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Richard Deeming · Accepted Answer · 2021-08-05T23:14:00

Your regular expression doesn't allow new-line characters. If you enter more than one line of text in the textbox, the validation will fail.

If you want the field to be required, you'll also need a required field validator.

ASP.NET

<asp:requiredFieldValidator runat="server" controlToValidate="txtdetail" errorMessage="You must enter the detail." />

<asp:regularExpressionValidator runat="server" controlToValidate="txtdetail" validationExpression="^[a-zA-Z0-9 ,\n]+$" errorMessage="Alphabet, Numbers and Space are allowed." />

You also need to check the Page.IsValid property in your code-behind event handler.

C#

protected void BtnGoToOtherDetail_Click(object sender, EventArgs e)
{
    if (Page.IsValid)
    {
        MultiView1.ActiveViewIndex = 2;
    }
}

ravitv · Accepted Answer · 2021-08-05T22:49:00

Hi Sorry for late reply,
The format was not correct - I agree - and that happened due to some malfunctioning of this site at the time of posting this question.
Anyway here I post it again.
....
......

of-course it validates, but doesn't move to next view(I have 5 MultiView1.ActiveViewIndex = 1;) on clicking button after validation.

...
....

But I tried using "Required" property

<asp:textbox id="txtdetail" runat="server" cssclass="inputtxt" textmode="MultiLine" maxlength="100" required="">

It works, But I want the user NOT to enter any other character except AlphaNumeric, Hyphen, Space and Dot.
I tried Regular Validation like

<asp:regularexpressionvalidator id="RegularExpressionValidator10"
="" controltovalidate="txtdetail" validationexpression="[a-zA-Z0-9\s-.]*$" display="Static" enableclientscript="true" errormessage="Details ?" forecolor="Red" runat="server">

But it doesnt validates.
What mistake did i commit?
Please help,
Thanks
Ravi

Textbox with textmode="multiline" C# ASP.NET 2010

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