tybrazerzkidai.blogg.se - Could not assemble any primary key columns for mapped table

If the connection is open before FillSchema is called, it remains open.Ī FillSchema operation adds a DataTable to the destination DataSet.

If the connection is closed before FillSchema is called, it is opened to retrieve data, then closed. The connection object associated with the SelectCommand must be valid, but it does not need to be open. The FillSchema method retrieves the schema from the data source using the SelectCommand. Returns DataTableĪn array of DataTable objects that contain schema information returned from the data source. In this article Overloads FillSchema(DataSet, SchemaType, IDbCommand, String, CommandBehavior)Īdds a DataTable to the specified DataSet and configures the schema to match that in the data source based on the specified SchemaType.įillSchema(DataTable, SchemaType, IDbCommand, CommandBehavior)Ĭonfigures the schema of the specified DataTable based on the specified SchemaType, command string, and CommandBehavior values.Īdds a DataTable to the specified DataSet and configures the schema to match that in the data source based upon the specified SchemaType and DataTable.Ĭonfigures the schema of the specified DataTable based on the specified SchemaType.Īdds a DataTable named "Table" to the specified DataSet and configures the schema to match that in the data source based on the specified SchemaType. Adds a DataTable to a DataSet and configures the schema to match that in the data source.