Tài liệu Querying Data pptx

... Querying Data Now that you can control access to your application, you can turn your attention to querying and maintaining data. You will useWeb Server Data controls to connect to the database, ... browsing the data. Optimizing Data Access In this chapter, you have been using a SqlDataSource control to connect to the database and fetch the data. Behind the scenes, the SqlD...

Ngày tải lên: 21/01/2014, 15:20

... = new SqlDataAdapter(sqlText, ConfigurationSettings.AppSettings["Sql_ConnectString"]); // Fill the Customer table in the DataSet with customer data. DataSet ds = new DataSet( ... the message queue is closed. A DataSet is created and a DataAdapter is used to return the record for the requested CustomerID into a Customer DataTable in the DataSet. A result queue is created .....

Ngày tải lên: 14/12/2013, 18:16

... [ Team LiB ] Recipe 5.5 Deserializing Data Problem You have a DataSet that has been serialized and written to a file. You want to recreate the DataSet from this file. Solution Use the ... cast the result as a DataSet. The sample code loads a file stream containing a previously serialized DataSet in a specified format and deserializes it to recreate the original DataSet. The C# ....

Ngày tải lên: 14/12/2013, 18:16

... grid. dataGridMerge.DataSource = ds.Tables[0].DefaultView; dataGridMerge.CaptionText = "Merge Results: " + dtSource.DataSet.DataSetName + " into " + dtDest.DataSet.DataSetName; ... e) { dataGridMerge.DataSource = null; dataGridMerge.CaptionText = ""; } Discussion The Merge( ) method of the DataSet can merge a DataRow array, a DataTable, or a Data...

Ngày tải lên: 14/12/2013, 18:16

... Editing Data You have seen how to use a GridView control to fetch and browse data. The following set of exercises concentrate on deleting and modifying data using a GridView control. ... buttons for deleting and editing data. In the following exercise, you will add a Delete button to the GridView control. Create the Delete button 1. Ensure that CustomerData.aspx is displayed in...

Ngày tải lên: 15/12/2013, 00:15

... Sets 89 Creating DatabaseMetaData objects A Connection object represents a database connection and also instantiates a DatabaseMetaData object with the getMetaData() method. The DatabaseMetaData object ... DriverManager.getConnection(jdbcUrl,user,pwd); //Initialize a DatabaseMetaData object DatabaseMetaData dmd = conn.getMetaData(); //Retrieve database name and version String dbname = dmd...

Ngày tải lên: 10/12/2013, 02:15

... understanding of the network from the data center to the WAN edge to the branch office. This design guide is focused on the data center. A general overview of the data center, WAN edge, and WAAS ... at the WAN edge. – Data center aggregation—ACL configuration is required because only selected traffic (WAN) traversing the data center should be optimized. Campus and data center...

Ngày tải lên: 10/12/2013, 16:16

Ngày tải lên: 11/12/2013, 13:15

... NavigateURL='<%# DataBinder.Eval(Container, "DataItem.RegionURL") %>' ID="HyperLink1"/> As the name implies, the DataBinder supplies data from the data source that ... the odaRegions DataAdapter fills the data table called dtRegions. dtRegions is set as the data source for repRegions, and DataBind method is called, binding the Repeater to th...

Ngày tải lên: 14/12/2013, 20:16

... Classroom Databases To verify In SQL Server Enterprise Manager, expand Microsoft SQL Servers, SQL Server Group, LONDON (Microsoft Windows NT ® ). Click Databases and verify that the library database ... server name is the name of the student computer. Click Databases and verify that the library database is present In the tree pane expand Databases and Northwind Click on Tables and ver...

Ngày tải lên: 21/12/2013, 19:15