Rowupdating how

by  |  16-Oct-2016 11:47

Later, column information is used to generate UPDATE, DELETE or INSERT statements.

If it is included in the SELECT statement, the Td Command Builder will use the primary key column(s) to uniquely identify the target-row for an UPDATE or a DELETE statement. Refresh Schema if the Select Command property of the associated Td Data Adapter (Td Command Builder. Refresh Schema method updates the column information used to generate UPDATE, DELETE and INSERT statements in addition to updating the Td Connection and Td Transaction used for the Update.

Otherwise, all columns returned by the SELECT statement are added to the WHERE clause Td Command Builder will register as a listener for Row Updating events generated by the associated Td Data Adapter (Td Command Builder. Td Command Builder will generate a new DML statement and set the Td Row Updating Event Args. DML statements are generated based on the columns that are changed (UPDATE) in an updated row or columns that are inserted (INSERT) into a brand new row (Td Row Updating Event Args. Therefore, UPDATE and INSERT statements are generated for each Row Updating event while the DELETE statement is static until the next call to Td Command Builder.

For example, Fill Error could occur when you can't convert data from data from a database to Common Language Runtime (CLR) type without losing precision or when data type casting is not valid.

Fill Error Event Handler handles the Fill Error event.

If we could have accessed the Bind method ,that implicitly performs two-way binding, in the code-behind then we could have just override the Row Databound event and assigned the value to the gridview's checkbox control using the Bind method.

Community Discussion