/// <summary>
/// Retrieves the user input from the value control and assigns it to Value
/// </summary>
internal override void ControlToValue()
{
//set value to null by default
Value = null;
//null values
if (string.IsNullOrWhiteSpace(ValueControl.Text))
{
return;
}
//search primary KeyNotFoundException string at the end of the Text, betewwn parenthesis
//example: My Company Inc. (id=34)
try
{
string pkString = ValueControl.Text.Substring(ValueControl.Text.IndexOf('(') + 1);
pkString = pkString.TrimEnd(')');
pkString = pkString.Trim();
DataObject dobj = DataObject.From(this.ValueType);
TypeConverter.ToDataValueInstances(pkString, dobj.PrimaryKey);
Value = dobj;
}
catch { }
//if last attempt was succesfull, load selected from database and exit
if (!NullValues.IsNull(Value))
{
//if select operation returns null, set value to null again
if (DataBase.Current.Select((DataObject)Value) == null)
{
Value = null;
}
//otherwise value is already selected and loaded, so exit
else
{
return;
}
}
//otherwise search in the database for a match
DataObjectCollection found = DataBase.Current.Search(ValueType, ValueControl.Text);
//if found a match, get the first result, otherwise, set Value to null
if (found.Count > 0)
{
Value = found[0];
}
else
{
Value = null;
}
}
/// <summary>
/// Assings the Value to the valuecontrol input
/// </summary>
internal override void ValueToControl()
{
if (!NullValues.IsNull(Value))
{
DataObject selected;
selected = (DataObject)Value;
if (!selected.IsSaved)
{
selected.Select();
}
ValueControl.Text = selected.ToString() + " (" + TypeConverter.ToString(selected.PrimaryKey) + ")";
}
else
{
ValueControl.Text = null;
}
}