GetChanges in VS .NET

Generate Data Matrix in VS .NET GetChanges

GetChanges
Draw ECC200 In .NET Framework
Using Barcode maker for ASP.NET Control to generate, create Data Matrix 2d barcode image in ASP.NET applications.
www.OnBarcode.com
Make Barcode In .NET Framework
Using Barcode creator for ASP.NET Control to generate, create bar code image in ASP.NET applications.
www.OnBarcode.com
GetXml
Data Matrix ECC200 Generator In C#
Using Barcode printer for .NET framework Control to generate, create Data Matrix 2d barcode image in Visual Studio .NET applications.
www.OnBarcode.com
Draw Data Matrix 2d Barcode In VS .NET
Using Barcode generator for .NET Control to generate, create DataMatrix image in .NET applications.
www.OnBarcode.com
GetXmlSchema
Data Matrix ECC200 Creation In Visual Basic .NET
Using Barcode creator for Visual Studio .NET Control to generate, create DataMatrix image in VS .NET applications.
www.OnBarcode.com
Code-128 Maker In VS .NET
Using Barcode maker for ASP.NET Control to generate, create Code128 image in ASP.NET applications.
www.OnBarcode.com
HasChanges
Drawing QR Code In .NET
Using Barcode generation for ASP.NET Control to generate, create QR Code 2d barcode image in ASP.NET applications.
www.OnBarcode.com
ANSI/AIM Code 39 Generation In .NET Framework
Using Barcode generation for ASP.NET Control to generate, create Code 39 Extended image in ASP.NET applications.
www.OnBarcode.com
InferXmlSchema
Paint PDF-417 2d Barcode In .NET
Using Barcode drawer for ASP.NET Control to generate, create PDF-417 2d barcode image in ASP.NET applications.
www.OnBarcode.com
Printing USS-128 In .NET Framework
Using Barcode printer for ASP.NET Control to generate, create EAN 128 image in ASP.NET applications.
www.OnBarcode.com
Merge
Barcode Generation In .NET Framework
Using Barcode creator for ASP.NET Control to generate, create bar code image in ASP.NET applications.
www.OnBarcode.com
Encoding UPC - 8 In .NET Framework
Using Barcode creation for ASP.NET Control to generate, create GS1 - 8 image in ASP.NET applications.
www.OnBarcode.com
ReadXml
Create PDF 417 In .NET
Using Barcode maker for VS .NET Control to generate, create PDF417 image in Visual Studio .NET applications.
www.OnBarcode.com
Barcode Generator In Java
Using Barcode creator for Android Control to generate, create barcode image in Android applications.
www.OnBarcode.com
ReadXmlSchema
Encoding GTIN - 12 In Java
Using Barcode printer for Android Control to generate, create UPC-A Supplement 2 image in Android applications.
www.OnBarcode.com
Creating Data Matrix 2d Barcode In Java
Using Barcode printer for Android Control to generate, create Data Matrix ECC200 image in Android applications.
www.OnBarcode.com
Table 6-3: Primary DataSet Methods Method RejectChanges Description Rolls back all changes pending in the DataSet Returns the DataSet to its original state Writes an XML schema and data from the DataSet Writes the DataSet structure as an XML schema
UPC-A Supplement 5 Scanner In VB.NET
Using Barcode reader for VS .NET Control to read, scan read, scan image in .NET applications.
www.OnBarcode.com
Bar Code Generation In .NET
Using Barcode creation for Reporting Service Control to generate, create barcode image in Reporting Service applications.
www.OnBarcode.com
Reset
Print Code 39 In Objective-C
Using Barcode printer for iPad Control to generate, create Code 3 of 9 image in iPad applications.
www.OnBarcode.com
Decode QR Code JIS X 0510 In Visual C#
Using Barcode recognizer for VS .NET Control to read, scan read, scan image in VS .NET applications.
www.OnBarcode.com
WriteXml
WriteXmlSchema
We ll examine the HasChanges, GetChanges, AcceptChanges and RejectChanges methods in 9. HasChanges, GetChanges, AcceptChanges, RejectChanges, and Merge are used when updating the DataSet s Tables collection, and we ll examine those in the 9. That leaves only three methods: Clear, which we ve used extensively already; Clone, which creates an empty copy of the DataSet; and Copy, which creates a complete copy of the DataSet and its data. Cloning a DataSet The Clone method creates an exact duplicate of a DataSet, including its Tables, Relations, and constraints. Clone a DataSet
Roadmap
Visual Basic .NET
1. In the code editor, select btnClone in the ControlName list, and then select Click in the MethodName list. Visual Studio adds the Click event handler template. 2. Add the following code to clone the record set: 3. Dim strMessage As String 4. Dim dsClone As System.Data.DataSet 5. 6. dsClone = Me.dsMaster1.Clone() 7. strMessage = "The cloned dataset has " 8. strMessage &= dsClone.Tables.Count.ToString 9. strMessage &= " Tables." 10. MessageBox.Show(strMessage) 11. Press F5 to run the application. 12. Click Clone DataSet. The application displays a message box containing the number of tables in the new DataSet.
13. Close the application.
Visual C# .NET
1. In the form designer, double-click the Create Relation button. Visual Studio adds the Click event handler to the code. 2. Add the following code to clone the record set: 3. string strMessage; 4. System.Data.DataSet dsClone; 5. 6. dsClone = this.dsMaster1.Clone(); 7. 8. strMessage = "The cloned dataset has "; 9. strMessage += dsClone.Tables.Count.ToString(); 10. strMessage += " tables."; MessageBox.Show(strMessage); 11. Press F5 to run the application. 12. Click Clone DataSet. The application displays a message box containing the number of tables in the new DataSet.
13. Close the application.
Copying a DataSet Unlike the Clone method, which duplicates only the structure of a DataSet, the Copy method copies both its structure and its data. Copy a DataSet
Visual Basic .NET
1. In the code editor, select btnCopy in the ControlName list, and then select Click in the MethodName list. Visual Studio adds the Click event handler template. 2. Add the following code to copy the DataSet: 3. Dim strMessage As String 4. Dim dsCopy As System.Data.DataSet 5. 6. 'Fill the original dataset 7. Me.daCustomers.Fill(Me.dsMaster1.CustomerList) 8. 9. dsCopy = Me.dsMaster1.Copy 10. 11. strMessage = "The copied dataset has " strMessage &= _ dsCopy.Tables("CustomerList").Rows.Count.ToString
strMessage &= " rows in the CustomerList." 12. Press F5 to run the application. 13. Click Copy DataSet. Visual Studio displays a message box containing the number of rows in the CustomerList table.
14. Click OK to close the message box, and then close the application.
Visual C# .NET
1. In the form designer, double-click the Copy DataSet button. Visual Studio adds the Click event handler to the code. 2. Add the following code to copy the DataSet: 3. string strMessage; 4. System.Data.DataSet dsCopy; 5. 6. //Fill the original dataset
7. this.daCustomers.Fill(this.dsMaster1.CustomerList); 8. 9. dsCopy = this.dsMaster1.Copy(); 10. 11. 12. strMessage = "The copied dataset has "; strMessage += dsCopy.Tables["CustomerList"].Rows.Count.ToString(); strMessage += " rows in the CustomerList.";
MessageBox.Show(strMessage); 13. Press F5 to run the application. 14. Click Copy DataSet. Visual Studio displays a message box containing the number of rows in the CustomerList table.
15. Click OK to close the message box, and then close the application.
6 Quick Reference
To Create a Typed DataSet using the Component Designer Create an Untyped DataSet using Visual Studio Create an Untyped DataSet at run time Add a DataTable to an Untyped DataSet Do this Select a DataAdapter, and then choose Generate Dataset From the Data menu.
Drag a DataSet control from the Data tab of the Toolbox onto the form.
Use the New method of the DataSet object: myDs = New System.Data.DataSet()
In the Property window for the DataSet, click the Tables property, and then click the ellipsis button.
To using Visual Studio Add a DataTable to an Untyped DataSet at run time Add a DataRelatio n to an Untyped DataSet using Visual Studio Add a DataRelatio n to a DataSet at run time Clone a DataSet Copy a DataSet
Copyright © OnBarcode.com . All rights reserved.