ASP.NET TextBox control
TextBox control is used to create a user can enter text in the text box.
TextBox controls
TextBox control is used to create a user can enter text in the text box.
Characteristics and attributes of a column in the TextBox control our WebForms Controls reference page .
The following example demonstrates that you may use some of the attributes of the TextBox control:
Examples
<body>
<form runat="server">
A basic TextBox:
<asp:TextBox id="tb1" runat="server" />
<br /><br />
A password TextBox:
<asp:TextBox id="tb2" TextMode="password" runat="server" />
<br /><br />
A TextBox with text:
<asp:TextBox id="tb4" Text="Hello World!" runat="server" />
<br /><br />
A multiline TextBox:
<asp:TextBox id="tb3" TextMode="multiline" runat="server" />
<br /><br />
A TextBox with height:
<asp:TextBox id="tb6" rows="5" TextMode="multiline"
runat="server" />
<br /><br />
A TextBox with width:
<asp:TextBox id="tb5" columns="30" runat="server" />
</form>
</body>
</html>
The demonstration >>
Adding a script
When the form is submitted, TextBox control content and settings may be modified server scripts. Form by clicking a button or when a user modifies the value of a TextBox control when to commit.
In the following example, we declare a TextBox control in an .aspx file, a Button control and a Label control. When the submit button is triggered, submit subroutine will be executed. submit subroutine writes a line of text to the Label control:
Examples
Sub submit(sender As Object, e As EventArgs)
lbl1.Text="Your name is " & txt1.Text
End Sub
</script>
<html>
<body>
<form runat="server">
Enter your name:
<asp:TextBox id="txt1" runat="server" />
<asp:Button OnClick="submit" Text="Submit" runat="server" />
<p><asp:Label id="lbl1" runat="server" /></p>
</form>
</body>
</html>
The demonstration >>
In the following example, we declare a TextBox control and a Label control in an .aspx file. When you modify the values in the TextBox and click outside the TextBox (or press the Tab key), change the subroutine will be executed. change subroutine will write a line of text to the Label control:
Examples
Sub change(sender As Object, e As EventArgs)
lbl1.Text="You changed text to " & txt1.Text
End Sub
</script>
<html>
<body>
<form runat="server">
Enter your name:
<asp:TextBox id="txt1" runat="server"
text="Hello World!"
ontextchanged="change" autopostback="true"/>
<p><asp:Label id="lbl1" runat="server" /></p>
</form>
</body>
</html>
The demonstration >>