Tài liệu Retrieve Data by Using the DataReader Object docx

... loading items into it by using the DataReader object. To get to the DataReader object, you need to look at the Command object. The Command object in .NET works similarly to the ADO Command in ... heard that the DataReader object is a fast way to get data. How do you retrieve data using the DataReader object to perform this task? Technique For this...

Ngày tải lên: 14/12/2013, 20:16

... familiar object from Chapter 1 called the DataAdapter object. This time, instead of using the OleDbDataAdapter data control, you will use the OleDbDataAdapter class from the System .Data. OleDb ... connection to get there. You know that the DataTable object should allow you to perform this task. How do you get results from SQL Server by using the DataTable object...

Ngày tải lên: 26/01/2014, 11:20

... successfully ping the PC address, and the loopback, then the NIC and TCP/IP have been successfully installed. Now it is time to test whether or not the other hosts within the network can be ... reserved as the loopback address and is not used on the Internet. Instead, the loopback is an address that pings the NIC installed in the workstation you are currently using. T...

Ngày tải lên: 21/12/2013, 19:15

... .NET type = " + productsSqlDataReader.GetFieldType(discontinuedColPos)); // use the GetDataTypeName() method of the DataReader object // to obtain the database type of a column Console.WriteLine("ProductID ... show you how to get the .NET type and database type of a column using C#. You get the .NET type used to represent a column using the GetFieldTy...

Ngày tải lên: 24/12/2013, 01:17

... that you already have a SqlDataReader object named productsSqlDataReader and it may be used to read the columns from the Products table. The following while loop uses the GetSql* methods and returned ... how to read column values as Sql* types using the GetSql* methods */ using System; using System .Data; using System .Data. SqlClient; using System .Data. SqlTypes;...

Ngày tải lên: 24/12/2013, 01:17

... spectrum of the original image are the same as in the previous case, i.e., Eqs. (29.72), (29.73) and (29.74) hold true. The other two unknowns, i.e., the variance of the additive noise and the DFT of the ... stationary point. Furthermore, the results are comparable to the ones obtained with the CD uy algorithm. { Dx,v } as the complete data (CD Dx,v algorithm) The...

Ngày tải lên: 25/12/2013, 06:16

Ngày tải lên: 17/01/2014, 09:20

... using %ROWCOUNT, add a test for no rows in the cursor by using the %NOTFOUND attribute because the rowcount is not incremented if the fetch does not retrieve any rows. Processing Queries by Using Explicit ... or fetch the rows in a simple loop and determine when to exit the loop by using the %ROWCOUNT cursor attribute. Example Retrieve the first five line ite...

Ngày tải lên: 17/01/2014, 09:20

... StarGazer ® is the ADC element management system for PG-Flex Plus products. StarGazer is a comprehensive, carrier-class management solution, supporting essential features from all the TMN FCAPS management ... graphical user interface (GUI) is fully compatible with the PG-Flex Plus SNMP management interface. StarGazer also provides full access to the native PG-Flex Plus craft port scre...

Ngày tải lên: 24/01/2014, 12:20

... After the SQL string is created, it is assigned to lblSQLString to display the string, and then it is used in a data adapter to fill a dataset. Last, the SQL string is assigned as the data source ... source for the data grid dgResults. Listing 6.3 frmHowTo6_1.vb: Building the SQL String for Retrieving the Data Sub GenerateData(ByVal blnUseDistinct As Boolean) &a...

Ngày tải lên: 26/01/2014, 11:20