Calculating width of TextBox dynamically based on Text in C#

Posted Date: 20 Jun 2009	Resource Type: Code Snippets	Category: Winforms Controls
Author: ABitSmart	Member Level: Diamond
Rating:	Points: 10 (Rs 5)

Sometimes we need to expand the TextBox dynamically based on the length of the entered text. TextBox does not have a AutoSize property by which it can adjust it's size based on the content. On way of calculating the Width for the TextBox is using the Graphics.MeasureString and calculating the Pixel width. This method has it's Pros and cons.

A quick and easy (cheeky!!) method to do the same thing is to assign the text to a Label control's Text property. With AutoResize of the label set to true, the Label's width will automatically widen to fit the Text. Then use the Label's width to set the width for the TextBox.


Label lbl = new Label();
lbl.AutoSize = true;
lbl.Text = yourtextbox.Text;
yourTextbox.Width = lbl.Width;

Have fun.

For more details, visit Http://abitsmart.com/?p=101

Responses

Author: Abhay 05 Nov 2009 Member Level: Diamond Points : 1

Hi

It's showing error there is no property AutoSize .Please check it and put the valid URL.

Author: ABitSmart 05 Nov 2009 Member Level: Diamond Points : 1

Huh?? What 'valid link' are you referring to ?

MSDN - http://msdn.microsoft.com/en-us/library/
system.windows.forms.label.autosize.aspx

Author: Mohan 05 Nov 2009 Member Level: Diamond Points : 1

you need to declare like this..

System.Windows.Forms.Label lbl = new System.Windows.Forms.Label();

Author: Abhay 05 Nov 2009 Member Level: Diamond Points : 1

I am asking about this link that you have provided

For more details, visit C#;Winforms;Textbox width;Dynamically set TextBox width

And there is no property found as Autosize for a label.

Author: ABitSmart 05 Nov 2009 Member Level: Diamond Points : 1

I have fixed the link. Check my first reply, it has a link to MSDN. Have you had a look at it ?

Pasting the link on this reply again,
http://msdn.microsoft.com/en-us/library/
system.windows.forms.label.autosize.aspx

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