/// <summary>
/// Invokes the expression editor.
/// </summary>
/// <param name="report">A reference to the report.</param>
/// <param name="expression">The expression to edit.</param>
/// <returns>The new expression.</returns>
public static string EditExpression(Report report, string expression)
{
using (ExpressionEditorForm form = new ExpressionEditorForm(report))
{
form.ExpressionText = expression;
if (form.ShowDialog() == DialogResult.OK)
{
return(form.ExpressionText);
}
}
return(expression);
}
private void OpenExpressionEditorDialog(string columnName)
{
_columnName = columnName;
if (_dialog == null)
{
_dialog = new ExpressionEditorForm();
_dialog.Apply += _dialog_Apply;
}
// set data for ExpressionEditorForm dialog
_dialog.Text = string.Format("Edit expression of '{0}' column", columnName);
_dialog.DataSource = dataGridView1.DataSource;
_dialog.Expression = dataGridView1.GetExpression(columnName);
_dialog.ShowDialog();
if (_dialog.DialogResult == DialogResult.OK)
{
// update expression and evaluate it
dataGridView1.UpdateExpression(columnName, _dialog.Expression);
dataGridView1.Evaluate(columnName);
}
}