public SCGrid OutData(object dataSource, OutDataOptions options = null)
{
options ??= new OutDataOptions();
var dataTable = GetDataSource(dataSource,
new DataSourceParameters()
{
IgnoreErrors = options.IgnoreErrors, Columns = options.SelectColumns, SkipColumns = options.SkipColumns
});
try
{
List <BaseCommand> commands = null;
if (!string.IsNullOrWhiteSpace(options.Formatting))
{
var scanner = new Scanner();
var parser = new Parser(scanner);
var tree = parser.Parse(options.Formatting);
if (tree.Errors.Count > 0)
{
var strErrors = new StringBuilder();
foreach (var error in tree.Errors)
{
if (strErrors.Length > 0)
{
strErrors.AppendLine();
}
strErrors.Append(error.Message);
}
throw new Exception(strErrors.ToString());
}
try
{
commands = tree.Eval() as List <BaseCommand>;
}
catch (Exception)
{
//Do nothing, skip invalid commands
}
if (commands != null)
{
int counter = 1;
foreach (var formatCondition in commands.OfType <FormatCondition>())
{
dataTable.ExtendedProperties[$"Format_{counter++}"] = formatCondition.AsString();
}
counter = 1;
foreach (var computedColumn in commands.OfType <ComputedColumn>())
{
dataTable.ExtendedProperties[$"ComputedColumn_{counter++}"] = computedColumn.AsString();
}
}
}
ExecuteSynchronized(() => DoWriteTable(DataSet, dataTable, commands, options));
return(this);
}
finally
{
if (dataTable != dataSource)
{
dataTable.Dispose();
}
}
}
protected virtual void DoWriteTable(DataSet dataSet, DataTable dataTable, List <BaseCommand> commands, OutDataOptions options)
{
options ??= new OutDataOptions();
if (options.ResetDataSet)
{
dataSet.Reset();
}
//Set table name
var tableName = options.TableName ?? dataTable.TableName;
if (string.IsNullOrWhiteSpace(tableName))
{
var tableNames = new List <string>();
foreach (DataTable table in dataSet.Tables)
{
tableNames.Add(table.TableName);
}
tableName = Utils.AddUniqueString(tableNames, "Table1", StringComparison.CurrentCultureIgnoreCase, false);
}
dataTable.TableName = tableName;
if (options.Replace)
{
var table = dataSet.Tables[tableName];
if (table != null)
{
for (int i = dataSet.Relations.Count - 1; i >= 0; i--)
{
var relation = dataSet.Relations[i];
if (relation.ParentTable == table || relation.ChildTable == table)
{
dataSet.Relations.RemoveAt(i);
}
}
dataSet.Tables.Remove(table);
}
}
dataSet.Tables.Add(dataTable);
if (!string.IsNullOrWhiteSpace(options.ParentTable))
{
AddRelation(options.RelationName, options.ParentTable, tableName, options.ParentColumns, options.ChildColumns);
}
if (commands != null)
{
foreach (var relation in commands.OfType <Relation>())
{
AddRelation(relation.RelationName, relation.ParentTableName, relation.ChildTableName,
relation.ParentColumnNames.ToArray(), relation.ChildColumnNames.ToArray());
}
}
void AddRelation(string relationName, string parentTable, string childTable, string[] parentColumns, string[] childColumns)
{
if (string.IsNullOrWhiteSpace(parentTable) || string.IsNullOrWhiteSpace(childTable))
{
return;
}
if (parentColumns != null && parentColumns.Length > 0)
{
if (childColumns == null || childColumns.Length <= 0)
{
childColumns = parentColumns;
}
var parentDataTable = dataSet.Tables[parentTable];
var childDataTable = dataSet.Tables[childTable];
if (parentDataTable != null && childDataTable != null)
{
var columns1 = new List <DataColumn>();
foreach (var columnName in parentColumns)
{
var column2 = parentDataTable.Columns[columnName];
if (column2 == null)
{
ReportError($"Cannot create dataset relation: table '{parentDataTable.TableName}' has no column '{columnName}'.");
break;
}
columns1.Add(column2);
}
var columns2 = new List <DataColumn>();
foreach (var columnName in childColumns)
{
var column1 = childDataTable.Columns[columnName];
if (column1 == null)
{
ReportError($"Cannot create dataset relation: table '{childDataTable.TableName}' has no column '{columnName}'.");
break;
}
columns2.Add(column1);
}
if (columns1.Count == parentColumns.Length ||
columns2.Count == childColumns.Length)
{
try
{
var relationNames = new List <string>();
foreach (DataRelation relation in dataSet.Relations)
{
relationNames.Add(relation.RelationName);
}
if (string.IsNullOrWhiteSpace(relationName))
{
relationName = Utils.AddUniqueString(relationNames, "Relation1", StringComparison.CurrentCultureIgnoreCase, false);
}
dataSet.Relations.Add(relationName, columns1.ToArray(), columns2.ToArray());
}
catch (Exception ex)
{
ReportError($"Cannot create dataset relation: {ex.Message}");
}
}
}
else
{
ReportError($"Cannot create dataset relation '{parentTable}'-'{childTable}': table does not exist.");
}
}
else
{
ReportError("$Cannot create dataset relation: ParentColumn is not set.");
}
}
}
