Getting Started with Windows Forms Double TextBox

11 Oct 20222 minutes to read

Assembly deployment

Refer to the control dependencies section to get the list of assemblies or NuGet package that needs to be added as a reference to use the control in any application.

You can find more details about installing the NuGet packages in a Windows Forms application in the following link:

How to install nuget packages

Create a simple application with DoubleTextBox

You can create a Windows Forms application with DoubleTextBox using the following steps:

Create a project

Create a new Windows Forms project in Visual Studio to display the DoubleTextBox control.

Add control through designer

The DoubleTextBox control can be added to an application by dragging it from the toolbox to a designer view. The Syncfusion.Shared.Base assembly reference will be added automatically:

Add control manually in code

To add the control manually in C#, follow the given steps:

1. Add the Syncfusion.Shared.Base assembly reference to the project:

2. Include the Syncfusion.Windows.Forms.Tools namespace.

   C#

   using Syncfusion.Windows.Forms.Tools;

   VB.NET

   Imports Syncfusion.Windows.Forms.Tools

3. Create a DoubleTextBox instance, and add it to the window.

   C#

   DoubleTextBox doubleTextBox1= new DoubleTextBox ();
   this.Controls.Add(doubleTextBox1);

   VB.NET

   Dim doubleTextBox1As DoubleTextBox = New DoubleTextBox ()
   Me.Controls.Add(doubleTextBox1)

The maximum and minimum value constraints

You can set the maximum and minimum values using the MaxValue and MinValue properties of DoubleTextBox.

C#

this.doubleTextBox1.MaxValue = 25;
this.doubleTextBox1.MinValue = 4;

VB.NET

Me.doubleTextBox1.MaxValue = 25
Me.doubleTextBox1.MinValue = 4

Change number format

You can customize the number format using the NumberDecimalDigits, NumberDecimalSeparator, NumberGroupSeparator, NumberGroupSizes, and NumberNegativePattern properties of DoubleTextBox.

C# this.doubleTextBox1.DoubleValue = 24851343548781;
this.doubleTextBox1.NumberDecimalDigits = 3;
this.doubleTextBox1.NumberDecimalSeparator = “-“;
this.doubleTextBox1.NumberGroupSeparator = “;”;
this.doubleTextBox1.NumberGroupSizes = new int[] { 4 };
this.doubleTextBox1.NumberNegativePattern = 2;
VB Me.doubleTextBox1.DoubleValue = 24851343548781
Me.doubleTextBox1.NumberDecimalDigits = 3
Me.doubleTextBox1.NumberDecimalSeparator = “-“
Me.doubleTextBox1.NumberGroupSeparator = “;”
Me.doubleTextBox1.CurrencyGroupSizes = New Integer() {3}
Me.doubleTextBox1.NumberNegativePattern = 2