Selective Form Validation Using ASP.NET Validation Controls

[Ahmed Gaser]

Dear all i have a problem in a web form ,it contains two user controls ,each control has its own validation controls ,the problem is ,when I put the two user controls in the same page ,when I push a button in one of them the other validation controls in the other user controls fires even if the user control where I pushed the button is valid ,so please if any one knows an article opr a sample that discuss this issue please inform me Thanks

[minhpc_bk]

Hi there Because you place the two controls in the same page, then at the client side they all are placed in a form element. So when you click a button, all validators on the form will be running. In this case, if you want to seperate validators, you are required to provide a bit more work. What you need to do is to keep the validators of each user control in an array, it's the same as ASP.NET emits the client-side scripts to hold all validators:

var Page_Validators = new Array(document.all["RequiredFieldValidator1"],document.all["RequiredFieldValidator2"]);

At the client side, depending on which button clicked by the user, you can enable/disable the validators of each user control by getting through the validator list and setting the enabled property of each invidual validator. To emit the client-side scripts in the page, you can take a quick look at the methods of the Page class. http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfsystemwebuipagememberstopic.asp[^]

[Ahmed Gaser]

I Already disabled it in the client side ,but I can't disable it at the server side ,when I click on the button in one control ,it fires the other validation controls at the other user control (after running the server side script under this butoon),!! ,so what can I do ?

[minhpc_bk]

Hi there, In this case, you need a way to determine which user control is submitted, then in the code behind you can enable/disable the validators of each control. For example, I use a hidden element in a user control, then depending on which button is clicked at the client side, I am going to set a value for the right hidden element. The sample code in the code behind of a user control looks something like this:

private void Page_Load(object sender, System.EventArgs e)
{
...
if(Page.IsPostBack)
{
string submitType = Request[this.hiddenElement.Name];
if(submitType=="")
{
EnableValidators(false);
}
}
...
}

private void Page_PreRender(object sender, System.EventArgs e)
{
//By default, all validators are enabled.
EnableValidators(true);
}

In the EnableValidators() method, you can enable/disable the validators based on the method parameter.

[Ahmed Gaser]

sorry,can you please write more code for the client side and the server side,because it's so difficult to me to handle it thanks