Suppose we have a TextBox named Mobile_No and we need to validate it so that user cannot enter wrong values in a TextBox.
We can use RegularExpressionValidator to validate Mobile_No. We just need to set the following RegularExpressionValidator properties:
| ID | Mobile_Validator |
| ControlToValidate | Mobile_No |
| ErrorMessage | You can enter only numbers in Mobile Number |
| ValidationExpression | ^([0-9])+$ |
Now if user enter any value other than numbers, it will show an error message.
(Note- You can write your own Error Message and Control Names.)
(Note- You can write your own Error Message and Control Names.)
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