Cellvalidating cellleave

Cellvalidating cellleave

If an external resource is scarce or expensive, better performance can be achieved if the programmer explicitly releases resources when they are no longer being used. In truncate table the counter used by an identity column for new rows is reset to the seed for the column.

Difference Between Delete

Therefore, you should provide both an explicit and an implicit way to free those resources. Note that even when you provide explicit control by way of Dispose, you should provide implicit cleanup using the Finalize method.

An argument passed to a ref parameter must first be initialized. So, when you add a new value to the cell, the cellvalidating will not get the new value you've entered, but an old value. Finalize provides a backup to prevent resources from permanently leaking if the programmer fails to call Dispose.

The garbage collector calls this method at some point after there are no longer any valid references to the object. Unlike classes, structs can be instantiated without using the new operator. The SqlClient data provider is fast. There is no inheritance for structs as there is for classes.

Although it is possible to represent a point as a class, a struct is more efficient in some scenarios. If you want to retain the identity counter, use delete statement instead.

This event may get the new value when you leave to edit the current cell in your DataGridView. Because the new value hasn't been committed.

It's faster than the Oracle provider, and faster than accessing database via the OleDb layer. Difference Between Delete and Truncate.

It's faster than the Oracle