C sqldataadapter rowupdating ningbo dating service

Posted by / 19-May-2020 22:18

C sqldataadapter rowupdating

This allows you to maximize the performance of your ADO. For example, if a primary key value for an existing row is updated, and a new row has been added with the new primary key value as a foreign key, it is important to process the update before the insert. By specifying a subset of rows to be updated, you can control the order in which inserts, updates, and deletes are processed.

Added)); USE [master] GO CREATE DATABASE [My School] GO USE [My School] GO SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO CREATE TABLE [dbo].[Course]([Course ID] [nvarchar](10) NOT NULL, [Year] [smallint] NOT NULL, [Title] [nvarchar](100) NOT NULL, [Credits] [int] NOT NULL, [Department ID] [int] NOT NULL, CONSTRAINT [PK_Course] PRIMARY KEY CLUSTERED ( [Course ID] ASC, [Year] ASC )WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]) ON [PRIMARY] GO SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO CREATE TABLE [dbo].[Department]([Department ID] [int] IDENTITY(1,1) NOT NULL, [Name] [nvarchar](50) NOT NULL, [Budget] [money] NOT NULL, [Start Date] [datetime] NOT NULL, [Administrator] [int] NULL, CONSTRAINT [PK_Department] PRIMARY KEY CLUSTERED ( [Department ID] ASC )WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]) ON [PRIMARY] GO INSERT [dbo].[Course] ([Course ID], [Year], [Title], [Credits], [Department ID]) VALUES (N' C1045', 2012, N' Calculus', 4, 7) INSERT [dbo].[Course] ([Course ID], [Year], [Title], [Credits], [Department ID]) VALUES (N' C1061', 2012, N' Physics', 4, 1) INSERT [dbo].[Course] ([Course ID], [Year], [Title], [Credits], [Department ID]) VALUES (N' C2021', 2012, N' Composition', 3, 2) INSERT [dbo].[Course] ([Course ID], [Year], [Title], [Credits], [Department ID]) VALUES (N' C2042', 2012, N' Literature', 4, 2) SET IDENTITY_INSERT [dbo].[Department] ON INSERT [dbo].[Department] ([Department ID], [Name], [Budget], [Start Date], [Administrator]) VALUES (1, N' Engineering', 350000.0000, CAST(0x0000999C00000000 AS Date Time), 2) INSERT [dbo].[Department] ([Department ID], [Name], [Budget], [Start Date], [Administrator]) VALUES (2, N' English', 120000.0000, CAST(0x0000999C00000000 AS Date Time), 6) INSERT [dbo].[Department] ([Department ID], [Name], [Budget], [Start Date], [Administrator]) VALUES (4, N' Economics', 200000.0000, CAST(0x0000999C00000000 AS Date Time), 4) INSERT [dbo].[Department] ([Department ID], [Name], [Budget], [Start Date], [Administrator]) VALUES (7, N' Mathematics', 250024.0000, CAST(0x0000999C00000000 AS Date Time), 3) SET IDENTITY_INSERT [dbo].[Department] OFF ALTER TABLE [dbo].[Course] WITH CHECK ADD CONSTRAINT [FK_Course_Department] FOREIGN KEY([Department ID]) REFERENCES [dbo].[Department] ([Department ID]) GO ALTER TABLE [dbo].[Course] CHECK CONSTRAINT [FK_Course_Department] GO using System; using System. Original; Data Table temp Test Table = new Data Table(); temp Test Table. New Row(); row2["Age"] = 40; row2["Name"] = "Jones"; row2["Temp Test Table Id"] = 2; temp Test Table. The following examples demonstrate how to perform updates to modified rows by explicitly setting the Private Sub Adapter Update(By Val connection String As String) Using connection As Sql Connection = New Sql Connection( _ connection String) Dim adapter As Sql Data Adapter = New Sql Data Adapter( _ "SELECT Category ID, Category Name FROM dbo. Update Command = New Sql Command( _ "UPDATE Categories SET Category Name = @Category Name " & _ "WHERE Category ID = @Category ID", connection) adapter. Fill(category Table) Dim category Row As Data Row = category Table.

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My main goal is to be able to handle those events through the use of the generic Db Data Adapter class, and it will be a big pain to have to cast things back to the derived classes of the provider-specific implementations for the data adapter. I did a lot of searching online, and really didn't find anything concrete besides just re-casting instances back to the derived classes to access those events.

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