Getting Started with WinForms Double TextBox

18 Nov 20183 minutes to read

Assembly deployment

Refer to the Control Dependencies section to get the list of assemblies or the 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 WinForms Double TextBox

You can create a Windows Forms application with WinForms Double TextBox using the following steps:

Create a project

Create a new Windows Forms project in Visual Studio to display the WinForms Double TextBox control.

Add control through designer

The WinForms Double TextBox control can be added to an application by dragging it from the toolbox to the design view. The Syncfusion.Shared.Base assembly reference will be added automatically.

WinForms DoubleTextBox control added to the form via the designer

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.

    using Syncfusion.Windows.Forms.Tools;
    Imports Syncfusion.Windows.Forms.Tools

  3. Create a WinForms Double TextBox instance, and add it to the window.

    DoubleTextBox doubleTextBox1 = new DoubleTextBox();
this.Controls.Add(doubleTextBox1);
    Dim doubleTextBox1 As DoubleTextBox = New DoubleTextBox()
Me.Controls.Add(doubleTextBox1)

WinForms DoubleTextBox control added to the form using code

Maximum and minimum value constraints

You can set the maximum and minimum values using the MaxValue and MinValue properties of the WinForms Double TextBox.

this.doubleTextBox1.MaxValue = 25;
this.doubleTextBox1.MinValue = 4;
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 the WinForms Double TextBox.

this.doubleTextBox1.DoubleValue = 24851343548781;
this.doubleTextBox1.NumberDecimalDigits = 3;
this.doubleTextBox1.NumberDecimalSeparator = "-";
this.doubleTextBox1.NumberGroupSeparator = ";";
this.doubleTextBox1.NumberGroupSizes = new int[] { 4 };
this.doubleTextBox1.NumberNegativePattern = 2;
Me.doubleTextBox1.DoubleValue = 24851343548781
Me.doubleTextBox1.NumberDecimalDigits = 3
Me.doubleTextBox1.NumberDecimalSeparator = "-"
Me.doubleTextBox1.NumberGroupSeparator = ";"
Me.doubleTextBox1.NumberGroupSizes = New Integer() { 3 }
Me.doubleTextBox1.NumberNegativePattern = 2

WinForms DoubleTextBox with a custom number format applied