How to add Validator on Gridview TemplateField

Chriz L

11y2k.NET

Hello,

I have this templatefield in a gridview

Text='<%# Bind("Field1") %>'>

how can I add a validator to check if it's valid number?

Thank you in advance.

9 Replies

Know the answer? Post it — somebody with the same question will find it here.

Priyaranjan K S11y ago
Accepted answer
Hi Chriz,

Please try out the below updated code and let me know .

Decimal places upto two places :
<asp:TextBox ID="TextBox1" runat="server" />
<br />
<asp:RegularExpressionValidator ID="Regex1" runat="server" ValidationExpression="((\d+)((\.\d{1,2})?))$"
ErrorMessage="Please enter valid integer or decimal number with 2 decimal places."
ControlToValidate="TextBox1" />

Decimal places upto N places :
<asp:TextBox ID="TextBox2" runat="server" />
<br />
<asp:RegularExpressionValidator ID="Regex2" runat="server" ValidationExpression="((\d+)+(\.\d+))$"
ErrorMessage="Please enter valid decimal number with any decimal places." ControlToValidate="TextBox2" />

Thanks,
Priyan

If you found this useful Please mark this as Answer
+1
Priyaranjan K S11y ago
Awesome . Cheers !
0
Priyaranjan K S11y ago
Chriz,

Can you update the expression as :
(?:\d*\.\d{1,2}|\d+)$

ControlToValidate="TextBox1" />

Currently this checks for upto two decimal places . Please see if this works .

Thanks,
Priyan

If you found this useful Please mark this as Answer
+1
Chriz L11y ago
That works thank you!
0
Chriz L11y ago
Thank you all for the useful answers and links.

Priyaranjan K S this works perfectly for integers, I tried ValidationExpression="(^\d*\.?\d*[0-9]+\d*$)|(^[0-9]+\d*\.\d*$)" for decimals but it doesn't work.

Nilesh Jadav I get parse error when I run the code. I added
<%@ Register
Assembly="AjaxControlToolkit"
Namespace="AjaxControlToolkit"
TagPrefix="ajaxToolkit"%>

Thanks again for the help.
0
Rajeesh Menoth11y ago
Hi,

Check the following link with a demo...

http://www.aspsnippets.com/Articles/Using-ASPNet-RequiredFieldValidator-for-TextBox-inside-GridView-TemplateField-ItemTemplate.aspx
0
Priyaranjan K S11y ago
You can refer these links for better understanding of Regular Expression Validation :

http://stackoverflow.com/questions/19131992/how-to-place-a-required-field-validator-inside-a-gridview-textbox

http://forums.asp.net/t/1917874.aspx?how+to+validate+a+text+box+in+a+gridview+control+ie+in+item+template+field

Thanks,
Priyan

If you found this useful Please mark this as Answer
0
Nilesh Jadav11y ago
You can use Ajaxtoolkit for this. Use FilterTextBox inside EditItemTemplate.

Check demo here : http://www.ajaxcontroltoolkit.com/FilteredTextBox/FilteredTextBox.aspx

Text='<%# Bind("Field1") %>'>

Take Reference from here : http://highoncoding.com/Articles/146_Validate_Controls_Inside_GridView.aspx
0
Priyaranjan K S11y ago
Hi Chriz ,

You can use the Regular Expression Validator as below :

ErrorMessage="*Invalid"
ControlToValidate="TextBox1"
ValidationExpression="[0-9]*" />

Thanks,
Priyan

If you found this useful Please mark this as Answer

0