UpDownBase.InterceptArrowKeys Property
Important
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Gets or sets a value indicating whether the user can use the UP ARROW and DOWN ARROW keys to select values.
public:
property bool InterceptArrowKeys { bool get(); void set(bool value); };
public bool InterceptArrowKeys { get; set; }
member this.InterceptArrowKeys : bool with get, set
Public Property InterceptArrowKeys As Boolean
true
if the control allows the use of the UP ARROW and DOWN ARROW keys to select values; otherwise, false
. The default value is true
.
The following code example uses the derived class NumericUpDown and sets some of its properties derived from UpDownBase. This code requires that you have a NumericUpDown control named numericUpDown1
, two ComboBox controls named comboBox1
and comboBox2
, and three CheckBox controls named checkBox1
, checkBox2
, and checkBox2
created on a form. Add the following items to comboBox1
: None
, Fixed3D
, and FixedSingle
. Add the following items to comboBox2
: Left
, Right
, and Center
.
The code allows you to change the property values at run time and see how each affects the appearance and behavior of the spin box.
void comboBox1_SelectedIndexChanged( Object^ sender, EventArgs^ e )
{
// Set the BorderStyle property.
if ( !String::Compare( comboBox1->Text, "Fixed3D" ) )
{
numericUpDown1->BorderStyle = System::Windows::Forms::BorderStyle::Fixed3D;
}
else
if ( !String::Compare( comboBox1->Text, "None" ) )
{
numericUpDown1->BorderStyle = System::Windows::Forms::BorderStyle::None;
}
else
if ( !String::Compare( comboBox1->Text, "FixedSingle" ) )
{
numericUpDown1->BorderStyle = System::Windows::Forms::BorderStyle::FixedSingle;
}
}
void comboBox2_SelectedIndexChanged( Object^ sender, EventArgs^ e )
{
// Set the TextAlign property.
if ( !String::Compare( comboBox2->Text, "Right" ) )
{
numericUpDown1->TextAlign = HorizontalAlignment::Right;
}
else
if ( !String::Compare( comboBox1->Text, "Left" ) )
{
numericUpDown1->TextAlign = HorizontalAlignment::Left;
}
else
if ( !String::Compare( comboBox1->Text, "Center" ) )
{
numericUpDown1->TextAlign = HorizontalAlignment::Center;
}
}
void checkBox1_Click( Object^ sender, EventArgs^ e )
{
// Evaluate and toggle the ReadOnly property.
if ( numericUpDown1->ReadOnly )
{
numericUpDown1->ReadOnly = false;
}
else
{
numericUpDown1->ReadOnly = true;
}
}
void checkBox2_Click( Object^ sender, EventArgs^ e )
{
// Evaluate and toggle the InterceptArrowKeys property.
if ( numericUpDown1->InterceptArrowKeys )
{
numericUpDown1->InterceptArrowKeys = false;
}
else
{
numericUpDown1->InterceptArrowKeys = true;
}
}
void checkBox3_Click( Object^ sender, EventArgs^ e )
{
// Evaluate and toggle the UpDownAlign property.
if ( numericUpDown1->UpDownAlign == LeftRightAlignment::Left )
{
numericUpDown1->UpDownAlign = LeftRightAlignment::Right;
}
else
{
numericUpDown1->UpDownAlign = LeftRightAlignment::Left;
}
}
private void comboBox1_SelectedIndexChanged(Object sender,
EventArgs e)
{
// Set the BorderStyle property.
switch(comboBox1.Text)
{
case "Fixed3D":
numericUpDown1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
break;
case "None":
numericUpDown1.BorderStyle = System.Windows.Forms.BorderStyle.None;
break;
case "FixedSingle":
numericUpDown1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
break;
}
}
private void comboBox2_SelectedIndexChanged(Object sender,
EventArgs e)
{
// Set the TextAlign property.
switch (comboBox2.Text)
{
case "Right":
numericUpDown1.TextAlign = HorizontalAlignment.Right;
break;
case "Left":
numericUpDown1.TextAlign = HorizontalAlignment.Left;
break;
case "Center":
numericUpDown1.TextAlign = HorizontalAlignment.Center;
break;
}
}
private void checkBox1_Click(Object sender,
EventArgs e)
{
// Evaluate and toggle the ReadOnly property.
if (numericUpDown1.ReadOnly)
{
numericUpDown1.ReadOnly = false;
}
else
{
numericUpDown1.ReadOnly = true;
}
}
private void checkBox2_Click(Object sender,
EventArgs e)
{
// Evaluate and toggle the InterceptArrowKeys property.
if (numericUpDown1.InterceptArrowKeys)
{
numericUpDown1.InterceptArrowKeys = false;
}
else
{
numericUpDown1.InterceptArrowKeys = true;
}
}
private void checkBox3_Click(Object sender,
EventArgs e)
{
// Evaluate and toggle the UpDownAlign property.
if (numericUpDown1.UpDownAlign == LeftRightAlignment.Left)
{
numericUpDown1.UpDownAlign = LeftRightAlignment.Right;
}
else
{
numericUpDown1.UpDownAlign = LeftRightAlignment.Left;
}
}
Private Sub comboBox1_SelectedIndexChanged(sender As Object, e As EventArgs)
' Set the BorderStyle property.
Select Case comboBox1.Text
Case "Fixed3D"
numericUpDown1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
Case "None"
numericUpDown1.BorderStyle = System.Windows.Forms.BorderStyle.None
Case "FixedSingle"
numericUpDown1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle
End Select
End Sub
Private Sub comboBox2_SelectedIndexChanged(sender As Object, e As EventArgs)
' Set the TextAlign property.
Select Case comboBox2.Text
Case "Right"
numericUpDown1.TextAlign = HorizontalAlignment.Right
Case "Left"
numericUpDown1.TextAlign = HorizontalAlignment.Left
Case "Center"
numericUpDown1.TextAlign = HorizontalAlignment.Center
End Select
End Sub
Private Sub checkBox1_Click(sender As Object, e As EventArgs)
' Evaluate and toggle the ReadOnly property.
If numericUpDown1.ReadOnly Then
numericUpDown1.ReadOnly = False
Else
numericUpDown1.ReadOnly = True
End If
End Sub
Private Sub checkBox2_Click(sender As Object, e As EventArgs)
' Evaluate and toggle the InterceptArrowKeys property.
If numericUpDown1.InterceptArrowKeys Then
numericUpDown1.InterceptArrowKeys = False
Else
numericUpDown1.InterceptArrowKeys = True
End If
End Sub
Private Sub checkBox3_Click(sender As Object, e As EventArgs)
' Evaluate and toggle the UpDownAlign property.
If numericUpDown1.UpDownAlign = LeftRightAlignment.Left Then
numericUpDown1.UpDownAlign = LeftRightAlignment.Right
Else
numericUpDown1.UpDownAlign = LeftRightAlignment.Left
End If
End Sub
If the InterceptArrowKeys property is set to true
and the spin box (also known as an up-down control) has focus, the user can use the UP ARROW and DOWN ARROW keys to select values.
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 |
Windows Desktop | 3.0, 3.1, 5, 6, 7, 8, 9 |
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