protected override void OnBindDataSource()
{
try
{
EasyQuery.LogMessage2("{0} - EasyDetailsGrid.OnBindDataSource starts...", TableName);
this.DataSource = null;
if (QueryDef.DataStorage != null && QueryDef.DataStorage.Tables.Count > 0 &&
_master != null && _master.DataStorage != null)
{
if (QueryDef.DataStorage.Tables[TableName] != null && _master.DataStorage.Tables[_master.TableName] != null)
{
if (string.IsNullOrEmpty(_relname))
{
_relname = string.Format(System.Globalization.CultureInfo.InvariantCulture, "rel{0}", (UInt32)(Guid.NewGuid().GetHashCode()));
}
bool bExist = false;
foreach (DataRelation d0 in _master.DataStorage.Relations)
{
if (string.CompareOrdinal(d0.RelationName, _relname) == 0)
{
bExist = true;
break;
}
}
if (!bExist)
{
DataColumn[] masterColumns = _master.GetColumnsByNames(MasterKeyColumns);
DataColumn[] detailColumns = this.GetColumnsByNames(DetailsKeyColumns);
if (masterColumns.Length == 0 || detailColumns.Length == 0)
{
}
else
{
for (int i = 0; i < masterColumns.Length; i++)
{
masterColumns[i].ReadOnly = true;
}
for (int i = 0; i < detailColumns.Length; i++)
{
detailColumns[i].ReadOnly = true;
}
DataRelation dr = new DataRelation(_relname, masterColumns, detailColumns);
foreach (DataRelation dr0 in _master.DataStorage.Relations)
{
if (string.Compare(_relname, dr0.RelationName, StringComparison.Ordinal) == 0)
{
_master.DataStorage.Relations.Remove(dr0);
break;
}
}
_master.DataStorage.EnforceConstraints = false;
_master.DataStorage.Relations.Add(dr);
bExist = true;
}
}
if (bExist)
{
BindSource.DataSource = _master.MasterSource;
BindSource.DataMember = _relname;
BindSource.AllowNew = !ReadOnly;
}
else
{
DataTable tbl = QueryDef.DataStorage.Tables[TableName];
if (tbl == null)
{
base.Query();
tbl = QueryDef.DataStorage.Tables[TableName];
}
if (tbl != null)
{
BindSource.DataSource = _master.DataStorage;
BindSource.DataMember = TableName;
}
}
base.DataSource = BindSource;
if (BindingContext != null)
{
BindingManagerBase bm = BindingContext[BindSource];
if (bm != null)
{
QueryDef.SetBindingContext(bm);
}
}
OnFillData();
}
}
}
catch (Exception e)
{
FormLog.NotifyException(ShowErrorMessage, e, "{0} - EasyDetailsGrid.OnBindDataSource", TableName);
}
EasyQuery.LogMessage2("{0} - EasyDetailsGrid.OnBindDataSource ends---", TableName);
}