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Button1_Click is not a member of ASP default2_aspx
The error message “Button1_Click is not a member of ASP.default2_aspx” typically occurs when there is a mismatch between the code-behind file and the ASPX file in an ASP.NET application.
Here’s an example:
public partial class Default2 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
// Do something
}
}
In this example, we have a Default2.aspx.cs file that contains a Button1_Click event handler method. However, if the corresponding ASPX file (Default2.aspx) does not have a reference to this event handler method, we can get the “Button1_Click is not a member of ASP.default2_aspx” error.
To fix this, you need to ensure that the ASPX file has the correct CodeBehind or CodeFile attribute that references the correct code-behind file. Here’s an example:
<%@ Page Language=”C#” CodeBehind=”Default2.aspx.cs” Inherits=”MyProject.Default2″ %>
<!DOCTYPE html>
<html>
<head>
<title>Default2</title>
</head>
<body>
<form runat=”server”>
<div>
<asp:Button ID=”Button1″ runat=”server” Text=”Click me” OnClick=”Button1_Click” />
</div>
</form>
</body>
</html>
In this example, we have added the CodeBehind attribute to the @Page directive, which references the correct code-behind file (Default2.aspx.cs). We have also added an OnClick attribute to the Button control, which references the Button1_Click event handler method. Once you have made these changes, you should be able to build and run your application without getting the “Button1_Click is not a member of ASP.default2_aspx” error.
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