![Multiple controls with the same ID '_header' were found. FindControl requires that controls have unique IDs. in Asp.net « Asp.Net,MVC,C#.Net,VB.Net,Windows Application,WPF,Javascript,jQuery,HTML,Tips and Tricks,GridView Multiple controls with the same ID '_header' were found. FindControl requires that controls have unique IDs. in Asp.net « Asp.Net,MVC,C#.Net,VB.Net,Windows Application,WPF,Javascript,jQuery,HTML,Tips and Tricks,GridView](http://1.bp.blogspot.com/-cvDhAENVAd4/U8dcZ4yn1eI/AAAAAAAAEE4/rJmkv_OHA6Q/s1600/multiple-error.jpg)
Multiple controls with the same ID '_header' were found. FindControl requires that controls have unique IDs. in Asp.net « Asp.Net,MVC,C#.Net,VB.Net,Windows Application,WPF,Javascript,jQuery,HTML,Tips and Tricks,GridView
Find Control Styles with FindResource() : Resource « Windows Presentation Foundation « C# / CSharp Tutorial
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