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Update and Delete Data from an Oracle Database by Using Runtime Objects in .NET Create barcode pdf417 in .NET Update and Delete Data from an Oracle Database by Using Runtime Objects




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6.7 Update and Delete Data from an Oracle Database by Using Runtime Objects use .net pdf 417 development toattach pdf417 in .net Scan GS1 BarCodes Well, it looks like VS .NET PDF417 there are many modi cations that we need to do for this project, but it is easy to handle them. Let s begin our rst modi cation.

. 6.7.1 Add the Oracle Namespace Reference and Modify the Imports Command Open the project and PDF417 for .NET go to the Solution Explorer window, right-click the project, and select the Add Reference item to open the Add Reference dialog box. Browse along the list until you nd the item System.

Data.OracleClient. Select it and click OK to add this reference to our project.

Open the code windows of the following forms from the current project: LogIn Faculty Course Insert Faculty Form Replace the Imports command Imports System.Data.SqlClient, which is located on the second line at the top of each code window, with the new command Imports System.

Data.OracleClient for all the above four form windows. Since we will not use the Student and SP forms for this project, leave them unchanged.

. 6.7.2 Modify the Connection String and Query String for the LogIn Form Modi cations to the PDF417 for .NET LogIn form can be divided into three parts: modi cations to the connection string in the Form Load event procedure, modi cations to the SELECT query string in the TableAdapter LogIn button s Click event procedure, and modi cations to the SELECT query string in the DataReader LogIn button s Click event procedure..

6.7.2.

1 Modify the C onnection String in the Form Load Event Procedure Open the Form Load event procedure of the LogIn form, and change the connection string to. Dim oraString As String = Data Source = XE; + User ID = system; + Password = reback Also change the pre xes of all data classes from Sql to Oracle and the pre xes of all data objects from sql to ora, respectively.. 6.7.2.

2 Modify the S .net vs 2010 PDF417 ELECT Query String in the TabLogIn Button Event Procedure Open the TabLogIn button s Click event procedure, and change the SELECT query string to. Data Updating and Deleting with Visual Basic.NET Dim cmdString1 As St .net vs 2010 pdf417 2d barcode ring = SELECT user name, pass word, faculty id, student id FROM LogIn Dim cmdString2 As String = WHERE user name = :Param1 AND pass word = :Param2 . Also change the pre xes of all data classes from Sql to Oracle and the pre xes of all data objects from sql to ora, respectively. Change the two dynamic parameters names from @Param1 to Param1 and from @Param2 to Param2, respectively..

6.7.2.

3 Modify the S pdf417 2d barcode for .NET ELECT Query String in the ReadLogIn Button Event Procedure Open the ReadLogIn button s Click event procedure, and change the SELECT query string to. Dim cmdString1 As St ring = SELECT user name, pass word, faculty id, student id FROM LogIn Dim cmdString2 As String = WHERE user name = :name AND pass word = :word . Also change the pre PDF-417 2d barcode for .NET xes of all data classes from Sql to Oracle and the pre xes of all data objects from sql to ora, respectively. Change the two dynamic parameters names from @name to name and from @word to word, respectively.

. 6.7.3 Modify the Query Strings for the Faculty Form This modi cation can barcode pdf417 for .NET also be divided into three parts: modi cations to the query string for the Select button s Click event procedure, modi cations to the query string for the Update button s Click event procedure, and modi cations to the query string for the Delete button s Click event procedure..

6.7.3.

1 Modify the S ELECT Query String for the Select Button Event Procedure Open the Select button s Click event procedure, and change the query string to. Dim cmdString1 As St .net vs 2010 PDF-417 2d barcode ring = SELECT faculty id,name,of ce, phone, college, title, email FROM Faculty Dim cmdString2 As String = WHERE name = :facultyName . Also change the pre xes of all data classes from Sql to Oracle and the pre xes of all data objects from sql to ora, respectively. Change the dynamic parameter s name from @facultyName to facultyName..

6.7 Update and Delete Data from an Oracle Database by Using Runtime Objects 6.7.3.

2 Modify the U PDATE Query String for the Update Button Event Procedure Open the Update button s Click event procedure, and change the query string to. Dim cmdString As Str pdf417 2d barcode for .NET ing = UPDATE Faculty SET faculty id = :faculty id, & name = :name, of ce = :of ce, phone = :phone, college = :college, & title = :title, email = :email WHERE (name = : Param1) . Change the pre xes o f all data classes from Sql to Oracle and the pre xes of all data objects from sql to ora, respectively. Also modify the data types and the names of the dynamic parameters inside the UpdateParameters() subroutine as follows: Change the data type for all parameters from SqlDbType to OracleType. Remove the @ symbol before all parameters names.

. 6.7.3.

3 Modify the D PDF-417 2d barcode for .NET ELETE Query String for the Delete Button Event Procedure Open the Delete button s Click event procedure, and change the query string to. Dim cmdString As Str ing = DELETE FROM Faculty WHERE (name = : Param1) . Change the pre xes o PDF-417 2d barcode for .NET f all data classes from Sql to Oracle and the pre xes of all data objects from sql to ora, respectively. Also change the dynamic parameter s name from @Param1 to Param1 and the data type from SqlDbType to OracleType.

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