asked on 3/30/2013

OnCheckedChanged event... javascript

Upon checking chkEmailUpdates below:

<asp:CheckBox ID="chkSpecial" runat="server" Text="Email me updates" OnCheckedChanged="fncEnableEmailBox(Cheched)" />

the text box below (txtAddress, already disabled)

<asp:TextBox ID="txtAddress" runat="server" Enabled="False"></asp:TextBox>

is expected to fire fncEnableEmailBox() with an argument true or false to enable or disable txtAddress and also activate or deactivate its validation (unless validation is ignore when a control is disabled)?

Question: How is this done in javascript?

I suppose this could be done in vb itself without using javascript? But I suppose, javascript will be better because it doesn't involve a postback and updating the disable/disable status of txtAddress in page onload event (using session variables). I appreciate some comments on this point.

Thank you

ASP.NET

Last Comment

Mike Eghtebas

3/31/2013

Ioannis Paraskevopoulos

3/30/2013

Hi,

Try the following:

document.getElementById('txtAddress').disabled = true;

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Giannis

Mike Eghtebas

3/30/2013

ASKER

Hi jyparask,

If this is what you mean:

<Script>
Function fnEnableEmailBox(bolCheched As Boolean) {

      document.getElementById('txtAddress').disabled = bolCheched ;
     
     ' also this needs to be handled as well
     'if (bolCheched == false) { 
     '     txtAddress ="";
     '} 
}
</Script>

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Then how to pass the value of bolCheched argument in:

OnCheckedChanged="fnEnableEmailBox(Cheched)"If so, I have the following error:

Compiler Error Message: BC30456: 'fnEnableEmailBox' is not a member of 'ASP.addcontact_aspx'.

Thanks

ASKER CERTIFIED SOLUTION

Tom Beck

3/30/2013

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Mike Eghtebas

3/31/2013

ASKER

Thank you.