Client side issues with .NET

[miteetall]

Just started doing .NET after years of "vintage" ASP. Seems like M$ is not making it easy to do client-side code within .NET. I really need to do some client-side dhtml and validation to prevent round-trips to the server and it looks like I am going to have dynamically render the javascript in a very ugly fashion in the Page.RegisterStartupScript. Anyone else as disappointed as I am?

 

[AtomicChip]

If your looking to do JavaScript validation, look into the following objects:

- RequiredFieldValidator
- CompareValidator
- RangeValidator
- RegularExpressionValidator
- CustomValidator

Other client-side JavaScript events can be written into any asp server object by:

[Object].Attributes.Add("[Client-side Event]","[Scripting Function"]);

So, in answer to your question, no, I am not disappointed in the way M$ has dealt with this. The transition from traditional ASP to ASP.NET is not as easy as a lot of people would think. I would personally compare it to going from Perl to C++.

-----------------------------------------------
"The night sky over the planet Krikkit is the least interesting sight in the entire universe."
-Hitch Hiker's Guide To The Galaxy

 

[jasonsalas]

AChip's right...take a serious gander into ASP.NET's validation controls...they make cross-browser safe JavaScript for your WebForms, and are really easy to use.

If for some reason the out-of-box controls still don't get it done, you're free to roll your own solution.

Check out the MS dox at:

http://www.dotnetjunkies.com/quickstart/aspplus/doc/webvalidation.aspx

...or my column at:

http://www.kuam.com/techtalk/customvalidatorclass.htm

 

[miteetall]

Thanks for the assistance, guys - you're a great help :^)

 

[timothy]

Pulling my hair out on this one. I want to run a simple js function when a user selects an item from a drop down (I'm sure this is an ASP.NET issue).

This is my Javascript function:

function SetupUserType(UserType){
	if(UserType=='Customer'){
		lstNPCs.Enable=false;
		lstRoles.Enable=true;
	}else{
		lstNPCs.Enable=true;
		lstRoles.Enable=false;
	}
}

My call to the (js) file that contains the function

<script language="javascript" src="Local.js"></script>

My drop down listbox that contains the event:

<asp:dropdownlist OnSelectedIndexChanged="SetupUserType(this)" id="ddlUserType" runat="server">
<asp:ListItem Value="Customer" Selected="True">Customer</asp:ListItem>
<asp:ListItem Value="Employee">Employee</asp:ListItem>
</asp:dropdownlist>

This is the error (right at compile):

Compilation Error 
Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately. 

Compiler Error Message: CS0117: 'ASP.Administrator_aspx' does not contain a definition for 'SetupUserType'

Source Error:
Line 30:
<asp:dropdownlist OnSelectedIndexChanged="SetupUserType(this)" id="ddlUserType" runat="server">
Line 31: <asp:ListItem Value="Customer" Selected="True">Customer</asp:ListItem>
Line 32: <asp:ListItem Value="Employee">Employee</asp:ListItem>

Any ideas? Let me know thanks.

 

[timothy]

Oops didn't mean to post here sorry!