} // Generate
static internal bool Generate(
DbDataAdapter dbDataAdapter,
DataTable dt,
string sourceTableName,
string datasetTableName)
{
if (sourceTableName.Length == 0) // Source Table name is invalid
{
return(false);
}
if (datasetTableName.Length == 0) // DataSet Table name is invalid
{
return(false);
}
DataTableMappingCollection mapList = dbDataAdapter.TableMappings;
mapList.Clear();
DataTableMapping map = mapList.Add(sourceTableName, datasetTableName);
for (int i = 0; i < dt.Rows.Count; i++)
{
System.Data.DataRow datarow = dt.Rows[i];
string sourceCol = ((string)datarow[SOURCE_COLUMNS]).Trim();
string datasetCol = ((string)datarow[DATASET_COLUMNS]).Trim();
if (sourceCol.Length == 0 || // drop empty mappings
datasetCol.Length == 0)
{
continue;
}
map.ColumnMappings.Add(sourceCol, datasetCol);
}
return(true);
} // Generate
// <Snippet1>
public void PushIntoArray()
{
// ...
// create DataTableMappingCollection collection mappings
// ...
DataTableMapping[] tables = {};
mappings.CopyTo(tables, 0);
mappings.Clear();
}
/// <summary>
/// OK Button event handler.
/// Copy the column mappings back the TableMapping collection.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void buttonOK_Click(object sender, System.EventArgs e)
{
System.Data.DataTable dt =
(System.Data.DataTable) this.dataGrid1.DataSource;
if (dt == null)
{
return;
}
dt.AcceptChanges();
string sourceTable = comboBoxSourceTable.Text.Trim();
string datasetTable = textBoxDatasetTable.Text.Trim();
if (sourceTable.Length == 0)
{
System.Windows.Forms.MessageBox.Show(
"Source Table name is invalid.",
"Table Mappings");
return;
}
if (datasetTable.Length == 0)
{
System.Windows.Forms.MessageBox.Show(
"DataSet Table name is invalid.",
"Table Mappings");
return;
}
DataTableMappingCollection mapList = this.dbAdapter.TableMappings;
mapList.Clear();
DataTableMapping map = mapList.Add(sourceTable, datasetTable);
for (int i = 0; i < dt.Rows.Count; i++)
{
System.Data.DataRow datarow = dt.Rows[i];
string sourceCol =
((string)datarow[TableMappings.SOURCE_COLUMNS]).Trim();
string datasetCol =
((string)datarow[TableMappings.DATASET_COLUMNS]).Trim();
if (sourceCol.Length == 0 || // drop empty mappings
datasetCol.Length == 0)
{
continue;
}
map.ColumnMappings.Add(sourceCol, datasetCol);
}
}
public void Dispose()
{
_tableMapCollection.Clear();
}
public void Clean()
{
tableMapCollection.Clear();
}
