TextBox.Rows Property

Reference

Definition

Namespace:: System.Web.UI.WebControls

Assembly:: System.Web.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Gets or sets the number of rows displayed in a multiline text box.

public:
 virtual property int Rows { int get(); void set(int value); };

[System.ComponentModel.Bindable(true)]
public virtual int Rows { get; set; }

[System.Web.UI.Themeable(false)]
public virtual int Rows { get; set; }

[<System.ComponentModel.Bindable(true)>]
member this.Rows : int with get, set

[<System.Web.UI.Themeable(false)>]
member this.Rows : int with get, set

Public Overridable Property Rows As Integer

Property Value

Int32

The number of rows in a multiline text box. The default is 0, which displays a two-line text box.

Attributes: BindableAttribute ThemeableAttribute

Exceptions

ArgumentOutOfRangeException

The selected value is less than 0.

Examples

The following code example demonstrates how to use the Rows property to specify a height of 5 rows for a multiline TextBox control.

Important

This example has a text box that accepts user input, which is a potential security threat. By default, ASP.NET Web pages validate that user input does not include script or HTML elements. For more information, see Script Exploits Overview.

ASP.NET (C#)

<%@ Page Language="C#" AutoEventWireup="True" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" > 

<head>
    <title> MultiLine TextBox Example </title>
<script runat="server">

      protected void SubmitButton_Click(Object sender, EventArgs e)
      {
         
         Message.Text = "Thank you for your comment: <br />" + Comment.Text;

      }

      protected void Check_Change(Object sender, EventArgs e)
      {
         
         Comment.Wrap = WrapCheckBox.Checked;
         Comment.ReadOnly = ReadOnlyCheckBox.Checked;

      }

   </script>

</head>

<body>

   <form id="form1" runat="server">

      <h3> MultiLine TextBox Example </h3>

      
      Please enter a comment and click the submit button. 

      <br /><br /> 
            
      <asp:TextBox ID="Comment"
           TextMode="MultiLine"
           Columns="50"
           Rows="5"
           runat="server"/>

      <br />

      <asp:RequiredFieldValidator
           ID="Value1RequiredValidator"
           ControlToValidate="Comment"
           ErrorMessage="Please enter a comment.<br />"
           Display="Dynamic"
           runat="server"/>                         

      <asp:CheckBox ID="WrapCheckBox"
           Text="Wrap Text"
           Checked="True"
           AutoPostBack="True"
           OnCheckedChanged="Check_Change"
           runat="server"/>

        

      <asp:CheckBox ID="ReadOnlyCheckBox"
           Text="ReadOnly"
           Checked="False"
           AutoPostBack="True"
           OnCheckedChanged="Check_Change"
           runat="server"/>

        

      <asp:Button ID="SubmitButton"
           Text="Submit"
           OnClick="SubmitButton_Click"
           runat="server"/>

      <hr />

      <asp:Label ID="Message"
           runat="server"/>

   </form>

</body>
</html>

<%@ Page Language="VB" AutoEventWireup="True" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" > 

<head>
    <title> MultiLine TextBox Example </title>
<script runat="server">

      Protected Sub SubmitButton_Click(sender As Object, e As EventArgs )
               
         Message.Text = "Thank you for your comment: <br />" + Comment.Text

      End Sub

      Protected Sub Check_Change(sender As Object, e As EventArgs )
         
         Comment.Wrap = WrapCheckBox.Checked
         Comment.ReadOnly = ReadOnlyCheckBox.Checked

      End Sub

   </script>

</head>

<body>

   <form id="form1" runat="server">

      <h3> MultiLine TextBox Example </h3>

      
      Please enter a comment and click the submit button. 

      <br /><br /> 
            
      <asp:TextBox ID="Comment"
           TextMode="MultiLine"
           Columns="50"
           Rows="5"
           runat="server"/>

      <br />

      <asp:RequiredFieldValidator
           ID="Value1RequiredValidator"
           ControlToValidate="Comment"
           ErrorMessage="Please enter a comment.<br />"
           Display="Dynamic"
           runat="server"/>                         

      <asp:CheckBox ID="WrapCheckBox"
           Text="Wrap Text"
           Checked="True"
           AutoPostBack="True"
           OnCheckedChanged="Check_Change"
           runat="server"/>

        

      <asp:CheckBox ID="ReadOnlyCheckBox"
           Text="ReadOnly"
           Checked="False"
           AutoPostBack="True"
           OnCheckedChanged="Check_Change"
           runat="server"/>

        

      <asp:Button ID="SubmitButton"
           Text="Submit"
           OnClick="SubmitButton_Click"
           runat="server"/>

      <hr />

      <asp:Label ID="Message"
           runat="server"/>

   </form>

</body>
</html>

Remarks

Use the Rows property to specify the number of rows displayed in a multiline text box.

Note

This property is applicable only when the TextMode property is set to TextBoxMode.MultiLine.

This property cannot be set by themes or style sheet themes. For more information, see ThemeableAttribute and ASP.NET Themes and Skins.

Applies to

Product	Versions
.NET Framework	1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1

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