transforming a dataset using xslt
Tài liệu Refreshing a DataSet Automatically Using Extended Properties pptx
... second, and a period of one second.Update Button.Click Uses a DataAdapter to update changes made to the first DataTable back to the data source. CheckRefreshDataSet( ) This method is called ... and a timer. The sample code contains two event handlers and one method: Form.Load Sets up the sample by creating a DataTable containing the Categories table from the Northwind database. ... Team LiB ] Recipe 9.14 Refreshing a DataSet Automatically Using Extended Properties Problem You need to automatically refresh a DataSet periodically. Solution Use extended properties and...
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Tài liệu Updating a Database Using a DataSet doc
... it again. The DataSet in this case is referred to as a disconnected DataSet as it doesn't maintain an active connection to the database. Disconnected DataSet objects act as a data cache ... time. Instead, a better approach is to connect to the database, fetch the data into a DataSet object, and then disconnect again. The user can browse the data in the DataSet and make any changes ... Configuration Wizard. Notice that this class is defined in a namespace called NorthwindDataSetTableAdapters (as are all the other TableAdapter classes for this DataSet) . The second statement...
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Tài liệu Using Transactions with a DataSet (SQL) pptx
... You can push these changes to the database using the following example: mySqlDataAdapter.Update(myDataSet); All your changes to myDataSet are pushed to the database as part of the transaction ... Each of the Command objects in mySqlDataAdapter will now use mySqlTransaction. Let's say you added, modified, and removed some rows from a DataTable contained in a DataSet named myDataSet. ... mySqlTransaction. Note A transaction is rolled back by default; therefore, you should always explicitly commit or roll back your transaction using Commit() or Rollback() to make it clear what...
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Create a Report Using Crystal Reports Report Expert
... notices and sales letters, are created using this expert. Mail Labels This expert allows you to create mailing labels that are any size and any number of columns. Standard The standard report ... product. Tabs Included in the Standard Report Wizard Included on the Standard Report Wizard are the following tabs: • Data. Specify the database and table that you will be using for this ... right now. Take some time 10.1 Create a Report Using Crystal Reports Report Expert I have created quite a few applications that allow the users to manipulate data in various ways. Now I...
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Customizing a Network Using the Registry phần 1
... cases when you are under a DoS attack, such behavior is undesirable, since all traffic can be redirected to a gateway that is not constantly monitored. Because of this reason, set this parameter ... these parameters and their recommended values are provided below: EnableDeadGWDetect (REG_DWORD data type). The default value (1) enables TCP/IP to switch to a secondary gateway if many connections ... (IDS) are still unable to correctly assemble fragmented IP packets. If you set this parameter to 0, the MTU value will always be equal to 576 bytes. KeepAlive (REG_DWORD data type). This parameter...
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Customizing a Network Using the Registry phần 2
... service are outlined in Table 8.3. Table 8.3: W32Time Service Registry Values Value name Data type Description Values AvoidTimeSyncOnWan REG_DWORD Synchronize with a computer that is at a different ... recommended that the user clear the Enable remote control checkbox, as shown in this illustration. Table 8.3: W32Time Service Registry Values Value name Data type Description Values [default] NTP ... successive attempts to find a domain controller fail. An event is logged every time a full wait occurs. 0 = The wait between attempts is at a minimum and no event is logged. 7 = [default]...
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Converting a DataReader to a DataSet
... You can use this table [ Team LiB ] Recipe 5.3 Converting a DataReader to a DataSet Problem You need to transfer data from a DataReader to a DataSet. Solution Create a DataTable schema ... (DataColumn[])pkCols.ToArray(typeof(DataColumn)); // Add the table to the DataSet. ds.Tables.Add(dataTable); object[] aData = new object[dataTable.Columns.Count]; // Read all rows from the DataReader. ... DataReader. while(dr.Read( )) { // Read the row from the DataReader into an array. dr.GetValues(aData); // Add the row from the array to the DataTable. dataTable.Rows.Add(aData); } } }...
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Tài liệu Create a WAN Using SDSL Modems pptx
... done using h a rd - w i red land line communications using a single broadband access pointthat is shared by all offices and securedwith a firewall and antivirus system. Welooked at seve ral ... in the same segment, although it’s slower than Ethernet.Dry pair SDSL has some disadvantages compared to other approaches,although these disadvantages were not critical in our installation:1. ... to another officelocation located at a line distance of24,000 feet because our local providerplanned to use an asymmetric DigitalSubscriber Line (ADSL), which couldnot reach that far. Although...
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Tài liệu Accessing a Database Using Visual Studio .NET ppt
... Explorer-that's the best way to learn. Once you've connected to the database, you can view things such as the tables. You can also retrieve and modify rows in the tables. You can drill ... clicking the Show Diagram button in the toolbar and selecting columns from the table, as shown in Figure 3.29. As you can see, I've selected the ContactName, CompanyName, and CustomerID columns ... the tables in the database by clicking the Add icon in the tree in Server Explorer, and you can retrieve the rows from a table by clicking the right mouse button on the table in the tree and...
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Tài liệu Building a DataSet Programmatically docx
... Team LiB ] Recipe 2.2 Building a DataSet Programmatically Problem You want to build a DataSet programmatically—including adding tables, columns, primary keys, and relations—from a schema ... BuildDataSetProgramaticallyForm.cs // Namespaces, variables, and constants using System; using System.Configuration; using System.Data; using System.Data.SqlClient; // . . . // Create the DataSet. DataSet ... the DataSet identifying the tables, columns, indexes, constraints, and data relations that need to be created. 2. Create a new DataSet, naming it in the constructor. 3. Create a new DataTable,...
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Tài liệu Transmitting a DataSet Securely docx
... private void encryptButton_Click(object sender, System.EventArgs e) { DataSet ds = new DataSet( ); SqlDataAdapter da; // Fill the Order table and add it to the DataSet. da = new ... System.Runtime.Serialization; using System.Runtime.Serialization.Formatters.Binary; using System.Security.Cryptography; using System.Data; using System.Data.SqlClient; // Table name constants private ... SchemaType.Source); da.Fill(orderTable); ds.Tables.Add(orderTable); // Fill the OrderDetails table and add it to the DataSet. da = new SqlDataAdapter("SELECT * FROM [Order Details]",...
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- creating a component using the component
- pass a dataset back
- using xpath to query data in a dataset
- using xsd schema files to load and save a dataset structure
- refreshing a dataset automatically using extended properties
- filling a dataset using an xml template query
- using transactions with a dataset sql
- writing and reading xml using a dataset object
- creating a dataset object using visual studio net
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