Updating data sources with data adapters ado net No credit cards no upgrades usan sex sites

This allows you to maximize the performance of your ADO.

NET application by specifying command syntax at design time and, where possible, through the use of stored procedures.

Use the Sql Command Builder class's ability to auto- ' generate these commands from the SELECT command. The choice of which value from the row to use for which parameter is controlled by the Sql Command object's Parameters property.

updating data sources with data adapters ado net-44updating data sources with data adapters ado net-25

As you can see from the following image we have a validation error appear telling us that no connection manager has been assigned to the task.The Sql Parameter object's Parameter Name property matches the name of the formal parameter (including the ""), the Source Column property contains the name of the column from which the value is to come, and the Source Version property specifies the version of the value that is to be used. Add( _ New Sql Parameter("@Description", Sql Db Type. encounters a change to a Data Row, it uses the Insert Command, Update Command, or Delete Command to process the change. Open( ) ' Create a data adapter object and set its SELECT command. To see the commands that are generated in Example 8-2, add the following lines anywhere after the declaration and assignment of the autogen variable: , etc.) in each of these statements. Dim str Select As String = _ "SELECT * FROM Categories" Dim da As Sql Data Adapter = New Sql Data Adapter(str Select, cn) ' Set the data adapter object's UPDATE, INSERT, and DELETE ' commands. Select("Category Name = 'Dairy Products'")(0) row("Description") = "Milk and stuff" ' Add a record. New Row( ) row("Category Name") = "Software" row("Description") = "Fine code and binaries" dt. For each row that is to be changed, added, or deleted, the parameters are replaced with values from the row, and the resulting SQL statement is issued to the database. Note: Keep in mind that this Update is different than a SQL UPDATE statement.


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