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# How to customize Decimal separator, Digit, Group separator and Group size in DoubleTextBox?

Platform: WinForms |
Control: DoubleTextBox |
Published Date: February 19, 2016 |
Last Revised Date: May 24, 2019
Tags:

In DoubleTextBox, Decimal separator, Decimal Digits, Group separator and Group size can be customized by following below steps.

## Decimal separator

The decimal separator value can be specified by using the property named “NumberDecimalSeparator”.

## Decimal Digits

The decimal digit value can be specified by using the property named “NumberDecimalDigits”.

## GroupSeparator

The group separator can be specified by using the property named “NumberGroupSeparator”.

## GroupSize

The group size can be specified by using the property named “NumberGroupSizes”.

The following code example demonstrates the same.

C#

```//To assign decimal seperator character
this.doubleTextBox1.NumberDecimalSeparator = this.textBox2.Text;

//To specify the decimal digits.
this.doubleTextBox1.NumberDecimalDigits = Convert.ToInt16(this.integerTextBox3.Text);

//To assign the seperator for grouping digits
this.doubleTextBox1.NumberGroupSeparator = this.textBox3.Text;

//To specify the Number group sizes.
int x = Convert.ToInt16(this.numericUpDownExt1.Value);
this.doubleTextBox1.NumberGroupSizes = new int[] { x };
```

VB

```'To assign decimal seperator character
Me.doubleTextBox1.NumberDecimalSeparator = Me.textBox2.Text

'To specify the decimal digits.
Me.doubleTextBox1.NumberDecimalDigits = Convert.ToInt16(Me.integerTextBox3.Text)

'To assign the seperator for grouping digits
Me.doubleTextBox1.NumberGroupSeparator = Me.textBox3.Text

'To specify the Number group sizes.
Dim x As Integer = Convert.ToInt16(Me.numericUpDownExt1.Value)
Me.doubleTextBox1.NumberGroupSizes = New Integer() { x }
```

Note:
1. The default value of the NumberDecimalDigits is 2.
2. The default value of the NumberDecimalSepartor is “.”.
3. The default value of the NumberGroupSeparator is “,”.
4. The default value of the NumberGroupSizes is 3.

Figure 1: Decimal separator is specified as “@”.

Figure 2: Decimal digits is specified as “5”.

Figure 3: Group separator is specified as “@”.

Figure 4: Group sizes is specified as “1”.

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