Validating textbox in gridview
The table illustrates how to store information that shares a one-to-many relationship with user accounts.
Since each user account may have an arbitrary number of associated comments, this relationship is modeled by creating a table to hold the set of comments that includes a column that links back each comment to a particular user. We now need to associate three columns with each user account to store the user's home town, homepage, and signature, which will appear in his guestbook comments.
This is evidenced by the methods and properties of the .
Oftentimes, applications need to store additional user information not included in the Membership framework.
This type of relationship is referred to as one-to-one.
The presence of this constraint ensures relational integrity between the two tables by guaranteeing that there will never be a guestbook entry referring to a non-existent user account.
By default, a foreign key constraint will disallow a parent record to be deleted if there are corresponding child records.
After adding this first field, marking it as the primary key, and settings its default value, your screen should look similar to the screen shot shown in Figure 2.
Figure 2: Add a Primary Column Named tutorial, the Membership framework is designed to enable multiple web applications with different user accounts to share the same user store.
Search for validating textbox in gridview:
Figure 5: Configure the Foreign Key Constraint to Cascade Deletes (Click to view full-size image) To save the foreign key constraint, click the Close button to exit out of the Foreign Key Relationships.