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Added on January 19,2012

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This example shows how we are going to set the Height of the MultiLine TextBox automatically when the contents of the TextBox is larger than the size of the TextBox.

First thing you need is DON'T set the Height of the TextBox in the mark up (ASPX) and then do the following:


protected void TextBox1_Load(object sender, EventArgs e)
int charRows = 0;
string tbCOntent;
int chars = 0;
tbCOntent = TextBox1.Text;
TextBox1.Columns = 10;
chars = tbCOntent.Length;
charRows = chars / TextBox1.Columns;
int remaining = chars - charRows * TextBox1.Columns;
if (remaining == 0)
TextBox1.Rows = charRows;
TextBox1.TextMode = TextBoxMode.MultiLine;
TextBox1.Rows = charRows + 1;
TextBox1.TextMode = TextBoxMode.MultiLine;


Protected Sub TextBox1_Load(ByVal sender As Object, ByVal e As EventArgs)
Dim charRows As Integer = 0
Dim tbCOntent As String
chars As Integer = 0
tbCOntent = TextBox1.Text
TextBox1.Columns = 10
chars = tbCOntent.Length
charRows = chars / TextBox1.Columns
Dim remaining As Integer = chars - charRows * TextBox1.Columns
If remaining = 0 Then
TextBox1.Rows = charRows
TextBox1.TextMode = TextBoxMode.MultiLine
TextBox1.Rows = charRows + 1
TextBox1.TextMode = TextBoxMode.MultiLine
End If
End Sub


That's it!

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Posted on Tuesday, February 17, 2009 4:50 PM ASP.NET , Tips&Tricks | Back to top

Comments on this post: Automatically Adjust the Hieght of the TextBox based on its Contents

# re: Automatically Adjust the Hieght of the TextBox based on its Contents
Requesting Gravatar...
Its works man...Thanks.....
Only I just modifed TextBox1.Columns = 70 because of space....
Left by Apil on Apr 26, 2012 7:41 PM

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