Unable to merge button-disable and code-behind functionality (JavaScript + code-behind)

After clicking on the Insert button, it performs its intended action. However, I want to prevent users from clicking the button multiple times by disabling it after it has been pressed.

<asp:Button ID="Insert" runat="server" Text="Send" OnClick="Insert_OnClick" 
  OnClientClick="this.disabled=true; showLoading(this);" />

When using both Insert_OnClick and "disable", the function Insert_OnClick does not execute because the button is disabled first, preventing the code-behind function from running.

I attempted to disable the button itself within the showLoading JavaScript function, but encountered the same issue.

Does anyone have a solution for ensuring that the code-behind function runs even when the button is disabled?

javascriptc#asp.netwebforms

Answer №1

To prevent the changes made by JavaScript from being undone after a PostBack, you can disable it in the code behind instead of relying on client-side actions. Even if you disable it after a click event, the JavaScript modifications will still be reverted.

protected void Button1_Click(object sender, EventArgs e)
{
    Insert.Enabled = false;
}

Another approach could be setting a timeout function on the OnClientClick event. This might help maintain the disabled state even during postbacks.

OnClientClick="setTimeout(function () { this.disabled=true; }, 10);"

Answer №2

If I had the chance, I'd consider modifying the Submit behavior.

An issue with altering the way submission works is that the front end code runs before the back end submit process. If you disable the button prior to the back end submit, it may hinder calling the necessary back end function.

Instead, I would explore alternative methods such as utilizing a webMethod or submitting the entire form.

By using a web method, you can interact with the front end while allowing the back end to complete its processing.

On the other hand, opting for a full form submission would involve managing the page_load Event more extensively.

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