datareader vs dataset in c
ADC KRONE - Guide Book - FTTP - Splicing vs. connectorization in FTTP networking
... numerousinterfaces and connections to route traffic between the end user and the central office. There isa fine line between maintaining a flexible and easily-accessible infrastructure and still achievingreasonable ... improved factory termination methods.Connector performance is typically measured in two ways. First, the optical and mechanicalspecifications the connector meets out-of-box – specifically, insertion ... isessential. Connectors enable easier access for troubleshooting and maintenance operations.They provide access at multiple points along the network and are certainly simpler than cuttinginto the cable...
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Tài liệu ADC KRONE - Guide Book - FTTP - Splicing vs. connectorization in FTTP networking ppt
... typicallycharacterized by performance to GR-326-CORE Issue 3. ADC excels in each of theseSplicing vs. connectorization in FTTP networking 2measurements by offering industry-leading optical ... improved factory termination methods.Connector performance is typically measured in two ways. First, the optical and mechanicalspecifications the connector meets out-of-box – specifically, insertion ... numerousinterfaces and connections to route traffic between the end user and the central office. There isa fine line between maintaining a flexible and easily-accessible infrastructure and still achievingreasonable...
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Tài liệu Splicing vs. Connectorization in FTTP Networking pptx
... TerminatedConnectorsCrossconnectPatchcordFiberDistributionHub(FDH)Figure 2. FDH Full Crossconnect Splitter Layout Splicing vs. Connectorization in FTTP NetworkingPage 5 In this application, ... significantoperational cost and time savings advantages over fusion splices.Splicing vs. Connectorization in FTTP NetworkingFeeder OSP Cable From C/ OCentral OfficeSplice CaseSplice CaseFiberDistributionHub(FDH)DropCableDropCableOptical ... NetworkingWHITE PAPER Splicing vs. Connectorization in FTTP NetworkingPage 3Easier Test AccessThe first consideration for replacing a splice withconnectors is the need for test access points....
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Using a DataReader Object in Visual Studio .NET
... with the instructions in this section, you can simply open the completed VS .NET project contained in the DataReader directory. To open the completed project, select File ➣ Open ➣ Project, browse ... SqlDataReader object and use it to retrieve the result set from a SqlCommand object, which you saw how to create using VS .NET in the previous chapter. That SqlCommand object contained a SELECT statement ... the sqlConnection1 object so that it connects to Save your MyDataReader project by selecting File ➣ Save All. You'll use this project in later chapters. If you used the completed DataReader...
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Converting a DataReader to a DataSet
... "SELECT * FROM [Order Details];"; // Create connection and command. SqlConnection conn = new SqlConnection( ConfigurationSettings.AppSettings["Sql_ConnectString"]); SqlCommand ... to a DataSet, this method is declared protected and cannot be accessed (unless you write a custom DataAdapter). There is no built -in mechanism for converting the connected DataReader object to ... contained DataRowCollection. The C# code is shown in Example 5-3. Example 5-3. File: ConvertDataReaderToDataSetForm.cs // Namespaces, variables, and constants using System; using System.Configuration;...
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Tài liệu Replacing Null Values in a Strongly Typed DataSet ppt
... and display columns. foreach(CategoriesDS.CategoriesRow row in ds.Categories) [ Team LiB ] Recipe 2.19 Replacing Null Values in a Strongly Typed DataSet Problem When a column in a database ... The C# code is shown in Example 2-26. Example 2-26. File: TypedDataSetNullsForm.cs // Namespaces, variables, and constants using System; using System.Configuration; using System.Text; using ... value in the DataSet to be a string indicating that no value is available. Solution Use annotations in the XML schema to control the handling of null values. The sample uses one XSD file: CategoriesDS_AnnotatedNull.xsd...
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Tài liệu Controlling the Names Used in a Strongly Typed DataSet pdf
... SqlDataAdapter("SELECT * FROM Categories", ConfigurationSettings.AppSettings["Sql_ConnectString"]); if (annotatedRadioButton.Checked) { // Create the typed DataSet with name ... Environment.NewLine + Environment.NewLine); // Iterate over the rows collection and display columns. // Note that the row collection is Categorys // and that each row is Category. foreach(CategoriesDS_AnnotatedName.Category ... typedNameDataColumn DataTable.ColumnNameColumnDataRow.ColumnName typedNameProperty PropertyNametypedNameChild accessor GetChildTableNameRows typedChildren Parent accessor TableNameRow typedParentDataSet...
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Tài liệu Counting Records in a DataReader ppt
... of the record count, centralizing the count in the stored procedure is less prone to coding errors than the counting approach. For more information about output parameters, see Recipe 2.9. ... String sqlText = "SELECT COUNT(*) FROM Orders; " + "SELECT * FROM Orders;"; // Create the connection. SqlConnection conn = new SqlConnection( ConfigurationSettings.AppSettings["Sql_ConnectString"]); ... ConfigurationSettings.AppSettings["Sql_ConnectString"]); SqlCommand cmd = new SqlCommand(sqlText, conn); conn.Open( ); // Create a DataReader on the first result set. SqlDataReader dr = cmd.ExecuteReader(...
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Tài liệu Determining the Differences in Data Between Two DataSet Objects doc
... in a copy of the first DataSet until it matches the second DataSet. Once all differences in all tables are processed, the DiffGram of the copy of the first DataSet contains the difference in ... edits within the DataSet objects. ds1.AcceptChanges( ); ds2.AcceptChanges( ); // Create a DataSet to store the differences. DataSet ds = new DataSet( ); DataTable dt1Copy = null; ... from the copy of the first table. ã If the row is found in the second table, the columns are compared and any differences in the columns in the second table are changed in the column in the first...
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Tài liệu Add and Delete Rows in a Dataset with ADO.NET pdf
... "Customers") 89. mdsCustIndiv.Tables("Customers").AcceptChanges() 90. 91. ' Close the connection 92. If mblnAdd Then 93. modaCustIndiv.InsertCommand.Connection.Close() ... following code to the Click event btnCancel. 105. Private Sub btnCancel_Click(ByVal sender As System.Object, _ 106. ByVal e As System.EventArgs) Handles btnCancel.Click 107. 108. ' Cancel ... mdsCustIndiv.Tables("Customers").AcceptChanges() 138. 139. ' Close the connection 140. modaCustIndiv.DeleteCommand.Connection.Close() 141. 142. Catch excData As Exception 143. MessageBox.Show("Error...
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Tài liệu Using XPath to Query Data in a DataSet doc
... XmlDataDocument to perform certain functionality more conveniently than could be accomplished using the DataSet directly. To execute an XPath query against the contents of a DataSet, call the SelectSingleNode( ... extract certain rows from a DataSet. Solution Use SelectSingleNode( ) or SelectNodes( ). The sample code contains two event handlers: Form.Load Sets up the sample by creating a DataSet containing ... for Using XPath Queries" and "Using XPath Queries." In .NET, the DataSet is synchronized with the XmlDataDocument. As a result, in some cases XML services can be used to access...
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Tài liệu Organic Farming in Austria: Idealism vs. market realism in the organic farming movement docx
... traditional agriculture practice a farming system that includes, in many cases, practices that are promoted in organic farming or included in its standards (e.g. crop rotation, organic fertilization, ... with a critical spirit of innovation. Michael objected that if critical voices could not be heard they could not achieve anything. Only when consumers got into contact with ‘Bio’, could they ... farming in Latin America. Int. J. Sustain. Dev. World Ecol., 7, 1-12. Inglis, J.T. 1993. Traditional ecological knowledge-concepts and cases. International Program on Traditional Ecological...
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Tài liệu Báo cáo khoa học: "Man* vs. Machine: A Case Study in Base Noun Phrase Learning" pdf
... af- fect a small number of instances in the training corpus. Van der Dosch and Daelemans (1998) show that not ignoring the low count instances is of- ten crucial to performance in machine learning ... spelling correction. In Pro- ceedings of the Fourteenth International Con- ference on Machine Learning, Nashville, Ten- nessee. M. Marcus, M. Marcinkiewicz, and B. Santorini. 1993. Building ... identification. In Proceedings of the 36th Annual Meeting of the Association of Computational Linguistics, pages 218-224. Association of Computational Linguistics. K. Church. 1988. A stochastic...
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IN THIS ISSUE: LIABILITY VS EQUITY CLASSIFICATION FOR FINANCIAL INSTRUMENTS ISSUED BY INVESTMENT FUNDS doc
... liquidation (Component 2) depends on the accounting policy choice made by K.ã If K chooses accounting policy (i) above, then Component 2 is classified as a liability.ã If K chooses accounting policy ... discussion and analysis about IFRS is included in our publication Insights into IFRS. In this issue: Liability vs equity classification for financial instruments issued by investment funds Investment ... such topics as fair value measurement, consolidation and IFRS 9 Financial Instruments.This series considers accounting issues arising from currently effective IFRS as well as forthcoming...
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