GrapeCity MultiRow Windows Forms Documentation
FocusProcess Constructor()
Example 


Initializes a new instance of the FocusProcess class.
Syntax
Public Function New()
Dim instance As New FocusProcess()
public FocusProcess()
Example
The following code example uses the RegularExpressionValidator to validate whether the input value matches RegularExpressionValidator.Expression, which indicates a currency value. When you input '-!2.05' in the Cell, then move the current cell to another Row, the focus cannot leave, because the input value does not match the RegularExpressionValidator.Expression. The FocusProcess occurs. If you input '-12.05', it matches. This example is part of a larger example available for the CellValidator class.
void setRegularExpressionValidator_Click(object sender, EventArgs e)
        {
            Template template = Template.CreateGridTemplate(1);

            RegularExpressionValidator regularExpressionValidator = new RegularExpressionValidator();
            //Define a regular expression for currency values.
            regularExpressionValidator.Expression = @"^-?\d+(\.\d{2})?$";
            regularExpressionValidator.RegexOptions = System.Text.RegularExpressions.RegexOptions.CultureInvariant;

            FocusProcess focusProcess = new FocusProcess();
            focusProcess.PreventFocusLeave = true;
            //When CurrentCell moves to another Row, the action is done.
            focusProcess.DoActionReason = ValidateReasons.RowValidating;

            regularExpressionValidator.Actions.Add(focusProcess);

            template.Row.Cells[0].Validators.Add(regularExpressionValidator);

            this.gcMultiRow1.Template = template;
            label .Text = @"The RegularExpressionValidator.Expression is '^-?\d+(\.\d{2})?$', which expresses a currency 
value, input '-!2.05', then move CurrentCell to another Row to trigger validation (DoActionReasion is RowValidating), the 
focus cannot move, input '-12.05', the focus moves to another Row.";
        }
Private Sub setRegularExpressionValidator_Click(ByVal sender As Object, ByVal e As EventArgs) Handles 
setRegularExpressionValidator.Click
        Dim template As Template = template.CreateGridTemplate(1)

        Dim regularExpressionValidator As New RegularExpressionValidator()
        'Define a regular expression for currency values.
        regularExpressionValidator.Expression = "^-?\d+(\.\d{2})?$"
        regularExpressionValidator.RegexOptions = System.Text.RegularExpressions.RegexOptions.CultureInvariant

        Dim focusProcess As New FocusProcess()
        focusProcess.PreventFocusLeave = True
        'When CurrentCell moves to another Row, the action is done.
        focusProcess.DoActionReason = ValidateReasons.RowValidating

        regularExpressionValidator.Actions.Add(focusProcess)

        template.Row.Cells(0).Validators.Add(regularExpressionValidator)

        Me.gcMultiRow1.Template = template
        label.Text = "The RegularExpressionValidator.Expression is '^-?\d+(\.\d{2})?$', which expresses a currency value, 
input '-!2.05', then move CurrentCell to another Row to trigger validation (DoActionReasion is RowValidating), the focus 
cannot move, input '-12.05', the focus moves to another Row."
    End Sub
Requirements

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

See Also

Reference

FocusProcess Class
FocusProcess Members
Overload List

 

 


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