ASP.NET how to disable button on submit?

I have forms with payment in ASP.NET site, when user clicks on asp:B开发者_如何学Pythonutton sometime he submits few times. I want to disable this functionality without harming current ASP.NET site ( by that i mean no fancy jQuery, unless it is very basic and will not interfere with ASP.NET built-in validation)

thanks!!!

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You can easily do this on the button in client side:

onClientClick="this.disabled=true;"

You can also use the approach from Muhammad with this:

onClientClick="if(Page_ClientValidate()){this.disabled=true;}"

If this is still not working, you can initiate the postback yourself before disabling the button:

onClientClick="if(Page_ClientValidate()){__doPostBack;this.disabled=true;}"

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onClientClick="if(Page_ClientValidate()){__doPostBack;this.disabled=true;}" 
UseSubmitBehavior="false" 

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Create a static method:

/// <summary>
/// Disable the button on submit. Remember to set up the validationGroup property if there is more than one form/submit
/// </summary>
/// <param name="objButton">The submit button object</param>
public static void disableSubmitButton(Button objButton)
{
    objButton.CausesValidation = false;
    string validationGroup = objButton.ValidationGroup;
    if (string.IsNullOrEmpty(validationGroup))
        objButton.Attributes.Add("onclick", "if (Page_ClientValidate()) {this.value=\"Processing...\";this.disabled=true;" + objButton.Page.ClientScript.GetPostBackEventReference(objButton, "").ToString() + "}");
    else
        objButton.Attributes.Add("onclick", "if (Page_ClientValidate(\"" + validationGroup + "\")) {this.value=\"Processing...\";this.disabled=true;" + objButton.Page.ClientScript.GetPostBackEventReference(objButton, "").ToString() + "}");
}

Create a form and put a button in your form (Remember to set up the validationGroup property if there is more than one form/submit):

<asp:Button runat="server" ID="btnSubmit" OnClick="btnSubmit_Click" />

Call it in page load:

CommonFunctions.disableSubmitButton(btnSubmit);

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I know this is an old question but all the answers fail in some circumstances. Mainly you risk getting a "Page_ClientValidate is not defined" error in the browser.

This approach does work:

public static void DisableSubmitButton(Button button)
{
    button.Attributes.Add("onclick", "this.disabled=true;" + button.Page.ClientScript.GetPostBackEventReference(button, String.Empty));
}

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you might go for blockUI. it's really nice, as it blocks the complete ui, not only the button - so that a user can't click on another button (eg. you want to save ... takes some time ... user clicks on delete meanwhile)