private List<Control> GetControls(TableBasedDropDownField field, Size canvasSize)
{
string displayMember = field.TextColumnName.Trim();
string valueMember;
if (field is DDLFieldOfCodes)
{
valueMember = field.CodeColumnName.Trim();
((DDLFieldOfCodes)field).ControlFactory = this;
}
else if (field is DDListField)
{
valueMember = field.CodeColumnName.Trim();
((DDListField)field).ControlFactory = this;
}
else
{
valueMember = field.TextColumnName.Trim();
}
ComboBox comboBox = new Epi.Windows.Enter.Controls.LegalValuesComboBox();
SetControlProperties(comboBox, field, canvasSize);
if (field is DDListField)
{
comboBox.DropDownStyle = ComboBoxStyle.Simple;
}
else
{
comboBox.DropDownStyle = ComboBoxStyle.DropDown;
}
comboBox.Sorted = field.ShouldSort;
if (!string.IsNullOrEmpty(displayMember))
{
comboBox.DisplayMember = null;
comboBox.ValueMember = null;
if (cachedListValues == null)
{
cachedListValues = new Dictionary<string, DataTable>();
}
DataTable displayTable;
if (cachedListValues.ContainsKey(displayMember + "," + field.SourceTableName))
{
displayTable = cachedListValues[displayMember + "," + field.SourceTableName];
}
else
{
displayTable = field.GetDisplayTable("", "", displayMember);
cachedListValues.Add(displayMember + "," + field.SourceTableName, displayTable);
}
if (displayTable != null)
{
comboBox.BeginUpdate();
comboBox.Items.AddRange(displayTable.AsEnumerable().Select(row => row.Field<string>("Item") ?? string.Empty).ToArray());
comboBox.EndUpdate();
if (displayTable.Rows.Count > 0)
{
if (field.CurrentRecordValueObject == null || string.IsNullOrEmpty(field.CurrentRecordValueString))
{
comboBox.SelectedIndex = -1;
}
else
{
comboBox.SelectedItem = field.CurrentRecordValueString;
}
}
}
}
Label prompt = GetPrompt(comboBox, field, canvasSize);
List<Control> controls = new List<Control>();
controls.Add(prompt);
controls.Add(comboBox);
field.Control = comboBox;
if (!fieldControls.ContainsKey(field))
{
fieldControls.Add(field, controls);
}
else
{
fieldControls.Remove(field);
fieldControls.Add(field, controls);
}
return controls;
}
