ASP.NET Button事件未触发

Question

I have an asp:button event that's not firing. Its weird because I have one exactly like it in the same page that is working perfectly, but this ones event is not firing when I click the button even though it exists, the page simply reloads without any of the code in the event executing. I'd really appreciate some help. Is it maybe because its in a bootstrap collapse?

Actually, now every time I add a button this happens, the old buttons still work, but I cant add any new ones, they just stopped working.

the .aspx file:

    <asp:Button runat="server" ID="GuestCarSubmit" Text="Submit As Guest" OnClick="GuestCarSubmit_Click" />

the .aspx.cs file

     protected void GuestCarSubmit_Click(object sender, EventArgs e)
    {
        MessageBox.Show("!!!!!!!!!!!");
        //this is not firing
    }

I can do GuestCarSubmit.UseSubmitBehavior = false; that would make the events fire, but also would make the textboxes empty on postback, and I also cant find a solution to that.

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Update: Ok to test I set the buttons UseSubmitBehavior to false. It turns out the button can read from another text box if submitBehavior is false but not from the one i need it to read from. And if i set it to true it stops firing the event. (keep in mind my other buttons don't require UseSubmitBehavior to be false to fire their events, only this one);

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Update 2: After Messing around with the code, it seems anything in that specific form doesn't work, how do I fix that? all of its text disappears on postback and its buttons don't fire events, but the other form the bootstrap collapse works fine.

Answer 1

Try adding:

OnClientClick="return false;"

Like:

<asp:Button runat="server" ID="GuestCarSubmit" Text="Submit As Guest" OnClick="GuestCarSubmit_Click" OnClientClick="return false;" />

Answer 2

In ASP.NET Web Form, you need to use RegisterStartupScript if you want to display a sample message box at client-side.

ClientScript.RegisterStartupScript(this.GetType(), "myfunc" + UniqueID, 
     "alert('hello!');", true);

Answer 3

请将原因验证属性添加到您的按钮中，如下所示。

Causes Validation = "false"