Anyone have any idea when and why Page.OnLoad() executes twice in the ASP.NET lifecicle?
Answers:
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Method 1
Do you have a an IMAGE element with a blank string for the URL on that page?
This one has caught so many people before 🙂
Method 2
Make sure you don’t have any tags like <img src=”#”> or <img src=””>, that makes IIS load the page twice. It’s a classic.
Method 3
Do you have AutoEventWireUp set to true and also attaching an event handler in code? This is a common reason.
Method 4
Another possibility is that Visual Studio browser link is enabled. To figure out what caused the issue you can inspect the Request object.
Method 5
Do you have any controls with AutoPostBack set to true ? That will cause the Page object to be recreated and therefore the PageLoad method will execute again.
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