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i have a text box which is randomly generate number and also having drop down list which have auto postback value to be problem is whenever i select the dropdownlist value it automatically change the text box to retain the value in the textbox...plz help mail id

1 solution

Use "!IsPostBack" condition on page load
if (!IsPostBack)
Random rnd = new Random();
TextBox1.Text = rnd.Next(1000).ToString("000");

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