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Object reference not set to an instance of an obje

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i want to change values of controls in a User Control when i click on a button in a another user control, but i get following error:Object reference not set to an instance of an objectCode://in My DownUserControl i callprotected void BTN_Click(object sender, EventArgs e){ TopUserControl TopUC = new TopUserControl(); TopUC.Title = "hello";}//and here I get the error in the TopUserControl:public string Title{ get { return TitleLable.Text } set { TitleLable.Text = value }}

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can you post the full erro and the full code.It is trying to process an object that is null or doesn't exist

I am working with webparts 2.0,I have a aspx file that has a user control (uc1) in a WebPartZone in the uc1 i have another WebpartZone that contains another Ucer Control (uc2)my code is so long do you want to send it to you?thanks for your answer
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