public override object EditValue(ITypeDescriptorContext context, IServiceProvider provider, object value)
{
if (context != null && context.Instance is DataGridView && provider != null)
{
ColumnMember[] array = value as ColumnMember[];
HybridDictionary hybridDictionary = new HybridDictionary(10);
if (array != null && array.Length > 0)
{
for (int i = 0; i < array.Length; i++)
{
if (!hybridDictionary.Contains(array[i].ColumnName))
{
hybridDictionary.Add(array[i].ColumnName, array[i].Member);
}
}
}
DataGridView dataGridView = (DataGridView)context.Instance;
ArrayList arrayList = new ArrayList();
foreach (DataGridViewColumn column in dataGridView.Columns)
{
string dataPropertyName = column.DataPropertyName;
if (dataPropertyName.Trim() != string.Empty)
{
arrayList.Add(new ColumnMember(column.Name, column.DataPropertyName));
}
}
if (arrayList.Count > 0)
{
value = new ColumnMember[arrayList.Count];
arrayList.CopyTo((ColumnMember[])value);
}
}
return(base.EditValue(context, provider, value));
}
public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
{
if (destinationType == typeof(InstanceDescriptor) && value is ColumnMember)
{
Type[] types = new Type[2]
{
typeof(string),
typeof(string)
};
ColumnMember columnMember = (ColumnMember)value;
object[] arguments = new object[2]
{
columnMember.ColumnName,
columnMember.Member
};
return(new InstanceDescriptor(typeof(ColumnMember).GetConstructor(types), arguments));
}
return(base.ConvertTo(context, culture, value, destinationType));
}
private void Initialize()
{
if (m_columnMembers == null)
{
ArrayList arrayList = new ArrayList();
foreach (DataGridViewColumn column in m_dgv.Columns)
{
if (column.DataPropertyName.Trim() != string.Empty)
{
ColumnMember value = new ColumnMember(column.Name, column.DataPropertyName.Trim());
arrayList.Add(value);
}
}
if (arrayList.Count > 0)
{
m_columnMembers = (arrayList.ToArray(typeof(ColumnMember)) as ColumnMember[]);
}
else
{
m_columnMembers = new ColumnMember[0];
}
}
m_complex = new bool[m_columnMembers.Length];
for (int i = 0; i < m_columnMembers.Length; i++)
{
string text = m_columnMembers[i].Member.Trim();
if (text == "this" || text.IndexOf(".") >= 0)
{
m_complex[i] = true;
}
else
{
m_complex[i] = false;
}
}
m_infos = new PropertyInfo[m_columnMembers.Length];
}
