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I would like to change the all the textbox color in the c# Window Application on click on button.

AB Vyas
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2 Answers2

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loop all the controls using for each statement, then check the type of control if textbox then set its BackgroundColor.

Deepesh
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  • But all the Textbox controls are not in one form. all the textbox are in different form – AB Vyas Jun 01 '11 at 09:39
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    In WPF app you can use theme and at runtime you can change the themes for whole app. I think that can be a feasible solution in your case – Deepesh Jun 01 '11 at 09:49
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The following function iterates all controls in the current Windows.Forms.Form. If the current control is a text box control, it sets its backcolor to red: 

foreach (Control c in Controls)
{
    TextBox tb = c as TextBox;
    if (tb != null)
    {
        tb.BackColor = System.Drawing.Color.Red; 
    }
}

Edit: the question seemed to be changed from ASP.NET -> Windows application. Now we iterate the Controls collection of the current Windows.Forms.Form.

Edit2: since the question now changes to WPF: you may use the information in this SO question here, to retrieve all open windows in the application.

Community
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user492238
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  • This can be change color of only one form controls i would like to in all the form which are avaliable in application – AB Vyas Jun 01 '11 at 09:42