public override object EditValue(System.ComponentModel.ITypeDescriptorContext context, System.IServiceProvider provider, object value)
{
// Return the value if the value is not of type Int32, Double and Single.
if (!(value is CalculateColumnInfo))
{
return(value);
}
// Uses the IWindowsFormsEditorService to display a
// drop-down UI in the Properties window.
IWindowsFormsEditorService edSvc = (IWindowsFormsEditorService)provider.GetService(typeof(IWindowsFormsEditorService));
if (edSvc != null)
{
CalculateColumnInfo calcuateColumnInfo = value as CalculateColumnInfo;
// Display an angle selection control and retrieve the value.
CalculateColumnEditorForm editForm = new CalculateColumnEditorForm(calcuateColumnInfo);
if (DialogResult.OK == edSvc.ShowDialog(editForm))
{
// Return the value in the appropraite data format.
return(editForm.Value);
}
}
return(value);
}
private void BtnEditCalcInfo_Click(object sender, EventArgs e)
{
CalculateColumnInfo calculateColumnInfo = objField as CalculateColumnInfo;
if (calculateColumnInfo == null)
{
calculateColumnInfo = new CalculateColumnInfo();
}
CalculateColumnEditorForm calculateColumnInfoEditForm = new CalculateColumnEditorForm(calculateColumnInfo);
if (calculateColumnInfoEditForm.ShowDialog() == DialogResult.OK)
{
calculateColumnInfoEditForm.HidechkDisplayedSteps();
objField = calculateColumnInfoEditForm.Value;
this.SetDisplayFormula(objField);
}
}