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asp.net vb.net validate textbox in a gridview template field

Posted on 2009-05-07
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1,239 Views
Last Modified: 2012-08-14
How can validate a textbox to only accept numbers.
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Question by:rflorencio
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LVL 41

Accepted Solution

by:
guru_sami earned 500 total points
ID: 24326872
check this:
The RequiredFieldValidator  is for empty text and
RegularExpressionValidator  is to check for numeric...
If your textbox can accept empty values remove RequireFieldValidator..
Make sure to set ValidationGroupProperty...

Check this for more info: http://quickstarts.asp.net/QuickStartv20/aspnet/doc/validation/default.aspx

<asp:TextBox ID="Txthr" runat="server" ValidationGroup="Txthr1"></asp:TextBox>
      <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server"
          ControlToValidate="Txthr" ErrorMessage="RequiredFieldValidator"
          ValidationGroup="Txthr1">*</asp:RequiredFieldValidator>
      <asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server"
          ControlToValidate="Txthr" ErrorMessage="RegularExpressionValidator"
          ValidationExpression="^[0-9]*" ValidationGroup="Txthr1">*</asp:RegularExpressionValidator>
      <asp:Button ID="Button2" runat="server" Text="Button" ValidationGroup="Txthr1" />
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Author Comment

by:rflorencio
ID: 24327547
Regularexpressionvalidator works well, but RequiredFieldValidator no. Appears the error message in all lines of gridview
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Author Comment

by:rflorencio
ID: 24327841
Sorry, This fine.
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