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Any additional rows returned are ignored. After any data is loaded back into the DataSet , the OnRowUpdated event is raised, allowing the user to inspect the reconciled DataSet row and any output parameters returned by the command. After a row updates successfully, the changes to that row are accepted. When using Update , the order of execution is as follows:.
The values in the DataRow are moved to the parameter values. The OnRowUpdating event is raised. If the command is set to FirstReturnedRecord , then the first returned result is placed in the DataRow. If there are output parameters, they are placed in the DataRow.
The OnRowUpdated event is raised. AcceptChanges is called. This will raise both the DataTable. RowChanging and DataTable. RowChanged events for the updated DataRow. Each command associated with the DataAdapter usually has a parameters collection associated with it. Parameters are mapped to the current row through the SourceColumn and SourceVersion properties of a.
NET data provider's Parameter class. SourceColumn refers to a DataTable column that the DataAdapter references to obtain parameter values for the current row. SourceColumn refers to the unmapped column name before any table mappings have been applied. If SourceColumn refers to a nonexistent column, the action taken depends on one of the following MissingMappingAction values. An exception is generated if it refers to a nonexistent column.
The following C code illustrates this behavior. In this scenario, the comparison is case insensitive. The Update method retrieves rows from the table listed in the first mapping before performing an update. The Update then refreshes the row using the value of the UpdatedRowSource property.
Any additional rows returned are ignored. After any data is loaded back into the DataSet , the OnRowUpdated event is raised, allowing the user to inspect the reconciled DataSet row and any output parameters returned by the command. After a row updates successfully, the changes to that row are accepted.
When using Update , the order of execution is as follows:. The values in the DataRow are moved to the parameter values. The OnRowUpdating event is raised. If the command is set to FirstReturnedRecord , then the first returned result is placed in the DataRow. If there are output parameters, they are placed in the DataRow. The OnRowUpdated event is raised. AcceptChanges is called.
Each command associated with the DbDataAdapter usually has a parameters collection associated with it. Parameters are mapped to the current row through the SourceColumn and SourceVersion properties of a. NET Framework data provider's Parameter class. SourceColumn refers to a DataTable column that the DbDataAdapter references to obtain parameter values for the current row. SourceColumn refers to the unmapped column name before any table mappings have been applied.
If SourceColumn refers to a nonexistent column, the action taken depends on one of the following MissingMappingAction values.
An exception is generated if it refers to a nonexistent column. The SourceVersion property of a. NET Framework data provider's Parameter class determines whether to use the Original, Current, or Proposed version of the column value.
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