how to create dyamically regular expression validator for a dynamically created text box in a table cell in c# web application

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i have crated a table dynamically and inside table i created dynamic text box.
i want to use validator for individual cell to validate for numeric only.

Posted 8-Apr-11 1:59am

taher ahmed choudhury

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Not Active · Answer 1 · 2011-04-08T02:07:00

Solution 1

Its not that difficult.

RegularExpressionValidator validator = new RegularExpressionValidator();
validator.ControlToValidate = textbox.ClientId;
validator.ValidationExpression = "[0-9]";
TableCell.Controls.Add(validator);

Posted 8-Apr-11 2:07am

Not Active

Comments

taher ahmed choudhury 8-Apr-11 8:18am

when ever i entered this it is showing cant place reg.exp.validator into a form

taher ahmed choudhury 11-Apr-11 1:12am

i tried in cell showing the errors like that

Server Error in '/' Application.
The ControlToValidate property of '' cannot be blank.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Web.HttpException: The ControlToValidate property of '' cannot be blank.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:

[HttpException (0x80004005): The ControlToValidate property of '' cannot be blank.]
System.Web.UI.WebControls.BaseValidator.ControlPropertiesValid() +8730985
System.Web.UI.WebControls.BaseValidator.get_PropertiesValid() +21
System.Web.UI.WebControls.BaseValidator.OnPreRender(EventArgs e) +27
System.Web.UI.Control.PreRenderRecursiveInternal() +80
System.Web.UI.Control.PreRenderRecursiveInternal() +171
System.Web.UI.Control.PreRenderRecursiveInternal() +171
System.Web.UI.Control.PreRenderRecursiveInternal() +171
System.Web.UI.Control.PreRenderRecursiveInternal() +171
System.W

taher ahmed choudhury 8-Apr-11 8:20am

Control 'ctl12' of type 'RegularExpressionValidator' must be placed inside a form tag with runat=server.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Web.HttpException: Control 'ctl12' of type 'RegularExpressionValidator' must be placed inside a form tag with runat=server.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:

[no name] 8-Apr-11 8:28am

Edit your post and show how you are doing this.

taher ahmed choudhury 8-Apr-11 8:32am

i m doing like that

itxt.Value = chrgdr["ofc"].ToString();
itxt.ID = "itxt";
RegularExpressionValidator validator = new RegularExpressionValidator();
validator.ControlToValidate = itxt.ID;
validator.ValidationExpression = "[0-9]";
cnew.Controls.Add(validator);

cnew.Controls.Add(itxt);

[no name] 8-Apr-11 11:04am

What part of edit your post did you not understand? DON'T keep adding replies, this is information that should have been included in your original post.

What is cnew? Where are you doing all of this? All you have done is basically repeat what I gave you.

appalanaidu Aug2011 · Answer 2 · 2013-12-08T21:33:00

TableCell tdTextbox = new TableCell();
RegularExpressionValidator regularExpressionValidator =
new RegularExpressionValidator
{
ID = string.Concat("RegularTextBoxDynamicValidator", m_FilteredTextBoxExtender),
Display = ValidatorDisplay.Dynamic,
ForeColor = System.Drawing.Color.Red,
ErrorMessage = "Invalid Charecters",
ControlToValidate = textBox.ID,
SetFocusOnError = true,
ValidationExpression = @"^[A-Za-z\s0-9" + allowedSpecialCharacters + "]*$"
};
tdTextbox.Controls.Add(textBox);