changing values in a row
Tài liệu Replacing Null Values in a Strongly Typed DataSet ppt
... DataSet based on the Categories table in Northwind The user specifies whether the one based on the default or annotated schema file is used In either case, data is loaded into the DataSet A row ... DataAdapter SqlDataAdapter da = new SqlDataAdapter("SELECT * FROM Categories", ConfigurationSettings.AppSettings["Sql_ConnectString"]); if (annotatedRadioButton.Checked) { // Create the typed DataSet without ... System.Data; using System.Data.SqlClient; // Table name constants private const String CATEGORIES_TABLE = "Categories"; // StringBuilder result = new StringBuilder( ); // Create the DataAdapter...
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Tài liệu Use Wildcards and Ranges of Values in a SQL Query pdf
... System.Object, ByVal e As System.EventArgs) Handles MyBase.Load GenerateData() End Sub In the class module for the form, add the code in Listing 6.7 to create the GenerateData routine After creating the ... statement, this routine assigns it to the Text property of lblSQLString Then the string is used in a data adapter that was created to fill the dtResults data table Last, the data table is set as ... build the data adapter and fill the data table Dim odaResults As New OleDb.OleDbDataAdapter(Me.lblSQLString.Text, BuildCnnStr("(local)", "Northwind")) Dim dtResults As New DataTable() Try odaResults.Fill(dtResults)...
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Báo cáo toán học: "COMPOSITION SUM IDENTITIES RELATED TO THE DISTRIBUTION OF COORDINATE VALUES IN A DISCRETE SIMPLEX" pptx
... into l disjoint groups The goal of labelled counting is to establish a relation between the cardinality of the sets of hands and the cardinality of the decks For example, when dealing with labelled ... us call a multiset M of integers sparse if M does not contain duplicates, and if |a − b| ≥ for all distinct a, b ∈ M Let us also say that a multiset M is 2-sparse if M does not contain duplicates, ... gauge-transformed into self-adjoint form, and as we saw above, spectral residue sequences are invariant with respect to gauge transformations Indeed, as we shall demonstrate shortly, the potential U(z) is uniquely...
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Tài liệu Finding, Filtering, and Sorting Rows in a DataTable ppt
... SqlDataAdapter mySqlDataAdapter = new SqlDataAdapter(); mySqlDataAdapter.SelectCommand = mySqlCommand; DataSet myDataSet = new DataSet(); mySqlConnection.Open(); mySqlDataAdapter.Fill(myDataSet); ... objects"); DataRow[] productDataRows = productsDataTable.Select("ProductID
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Tài liệu Accessing Deleted Rows in a DataTable pptx
... values are overwritten with the Original row version values Each DataRow has a RowState property that returns the current state of the row ADO.NET maintains several versions of the data in each ... version values are overwritten with the Original row version values Each DataRow has a RowState property that returns the current state of the row ADO.NET maintains several versions of the data in ... accessing rows in a DataTable or in a DataView The solution demonstrates an approach for getting Deleted rows from both a DataTable and a DataView Deleted rows include only those marked for deletion...
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Tài liệu Selecting the Top n Rows in a DataTable doc
... Orders table SqlDataAdapter da = new SqlDataAdapter("SELECT * FROM Orders", ConfigurationSettings.AppSettings["Sql_ConnectString"]); DataTable dt = new DataTable(ORDERS_TABLE); da.Fill(dt); da.FillSchema(dt, ... contain only rows with a Freight value greater than or equal to that value Add the appropriate delimiters when making non-numeric comparisons in the filter expression At this point, we are done unless ... can be more than one instance of the value in the nth record, as is the case with Freight In this case, iterate over the records following the nth record and add criteria to a copy of the data...
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Tài liệu Finding Rows in a DataView doc
... source table with schema and data SqlDataAdapter da = new SqlDataAdapter("SELECT * FROM Orders", ConfigurationSettings.AppSettings["Sql_ConnectString"]); DataTable dt = new DataTable("Orders"); da.FillSchema(dt, ... of all matching rows (or an empty array if no match is found) The DataRow for a DataRowView can be accessed using the DataRow property of the DataRowView Before either method can be used, a sort ... and FindRows( ) methods is that Find( ) returns the zero-based index of the first row that matches the search criteria (or -1 if no match is found) while FindRows( ) returns a DataRowView array...
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Tài liệu Modifying Rows in a DataTable phần 1 ppt
... steps to add a new row to a DataTable: public static void AddDataRow( DataTable myDataTable, SqlDataAdapter mySqlDataAdapter, SqlConnection mySqlConnection ) { Console.WriteLine("\nIn AddDataRow()"); ... NewRow() method of the DataTable to // create a new DataRow Console.WriteLine("Calling myDataTable.NewRow()"); DataRow myNewDataRow = myDataTable.NewRow(); Console.WriteLine("myNewDataRow.RowState ... setup of the DataAdapter object Adding a DataRow to a DataTable In this section, you'll learn how to add a DataRow to a DataTable Before you see this, let's populate a DataSet with the rows from...
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Tài liệu Modifying Rows in a DataTable phần 2 docx
... myNewDataRow at various points The output from AddDataRow() and its call to DisplayDataRow() is as follows: In AddDataRow() Calling myDataTable.NewRow() myNewDataRow.RowState = Detached Calling myDataTable.Rows.Add() ... DisplayDataRow() is defined as follows: public static void DisplayDataRow( DataRow myDataRow, DataTable myDataTable) { Console.WriteLine("\nIn DisplayDataRow()"); foreach (DataColumn myDataColumn ... locate the DataRow // in the DataTable using the primary key value DataRow myEditDataRow = myDataTable.Rows.Find("J5COM"); // step 3: change the DataColumn values of the DataRow myEditDataRow["CompanyName"]...
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Tài liệu Add and Delete Rows in a Dataset with ADO.NET pdf
... displayed in the text boxes Comments As you can see, adding and deleting a record does not take much more than editing and updating a record using ADO.NET Using the commands in this How-To and ... OleDb.OleDbCommandBuilder(modaCustIndiv) If mblnAdd Then 80 ' Have the command builder create an Insert SQL command 81 modaCustIndiv.InsertCommand = ocbCustIndiv.GetInsertCommand 82 Else 83 ' Have the ... 78 79 Dim oCtl As Object Dim strName As String If mblnAdd Then mdrCustIndiv = mdsCustIndiv.Tables("Customers").NewRow End If ' Start the editing in the datarow mdrCustIndiv.BeginEdit() ' Run...
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Tài liệu Hyperlink from a Row in the Data Grid to a Detail Page ppt
... Loading the Detail Information Based on the ProductID Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load 'Put user code to initialize the page ... object in code on this page to retrieve detail data Comments That's it! A good way to expand this example is to add the coding technique learned in the previous How-To for editing data Using data ... Columns tab and set the properties as displayed in Figure 5.14 Be sure to note the name of the form you are calling in the URL Format String so that you can name it the same in step Add the code in...
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Tài liệu Finding Rows in a DataTable ppt
... null Use a DataView based on the DataTable to locate records in one of the following ways: o Use the RowFilter property of the DataView Create a DataView based on the DataTable and set the RowFilter ... ) method also takes an optional argument that can also be used to select records matching a specified row state from the DataViewRowState enumeration Use the Find( ) method of the DataRowCollection ... private void FindDataTableRowsForm_Load(object sender, System.EventArgs e) { // Fill the Orders table SqlDataAdapter da = new SqlDataAdapter("SELECT * FROM Orders", ConfigurationSettings.AppSettings["Sql_ConnectString"]);...
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Tài liệu Hospitals in a changing Europe pdf
... Judith Healy (eds): Hospitals in a Changing Europe Martin McKee, Judith Healy and Jane Falkingham (eds): Health Care in Central Asia Elias Mossialos, Anna Dixon, Josep Figueras and Joe Kutzin (eds): ... self-regulation; that is, an organization maintains a quasi-steady state through homeostatic mechanisms that involve information feedback This analogy may be taken too far: a hospital is not a biological ... diffusing out of teaching hospitals and subspecialization was increasingly emerging in district hospitals, which in many countries were also playing a greater role in teaching and research, thus...
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Risks Ahead for the Financial Industry in a Changing Interest Rate Environment pdf
... United States United Kingdom Italy France China Australia Japan Russian Federation Canada Brazil Germany Turkey South Korea India South Africa Indonesia Mexico Argentina G20 countries' total 2010b) ... a) Based on banks contained in respective countries' Datastream bank indices Note that such data are not available for Saudi Arabia b) From 1-Jan-10 to 29-Jul-10 c) Based on banks contained in ... RISKS AHEAD FOR THE FINANCIAL INDUSTRY IN A CHANGING INTEREST RATE ENVIRONMENT A Current financial market outlook and risks Selected recent developments Financial markets are searching for...
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Expect the Unexpected: Building business value in a changing world pptx
... both geographically and in terms of type of usage: municipal and domestic, agricultural or industrial Agriculture in India, sub-Saharan Africa, and Asia (excluding China) is forecast to create the ... range of industries in 22 countries: Australia, Brazil, Canada, China, Denmark, France, Germany, India, Ireland, Italy, Japan, Mexico, Netherlands, Russia, Singapore, South Africa, South Korea, ... growing acidity of the world’s oceans threatening marine life • rapid diminishment of mountain glaciers in terms of annual mass balance, and • steady decline in the annual minimum extent of Arctic...
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Protecting Children''''s Health In A Changing Environment - Report Of The Fifth Ministerial Conference On Environment And Health.pdf potx
... Protecting children’s health in a changing environment Role of international financing mechanisms Climate change is a great challenge and a threat to health, but also an opportunity Structural transformation ... participation is facilitated across all Member States at both national and international levels by providing them with assistance, resources and the training required for meaningful and sustainable involvement ... implementation; • scaling up existing financial mechanisms; • bringing in new and innovative sources of finance; and • building capacities to secure, absorb and deploy environmental financing The...
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BOREAL SHIELD WATERSHEDS Lake Trout Ecosystems in a Changing Environment ppt
... (Picea glauca), balsam fir (Abies balsamea), and eastern white pine (Pinus strobes) Throughout the area, warmer and drier sites are dominated by jack pine (Pinus banksiana) and red pine (Pinus resinosa); ... Dauphin, and Winnipegosis In addition to these Manitoban areas, at various stages of its life Lake Agassiz also extended well into Ontario and Saskatchewan in Canada and the northern parts of the states ... Trout Lake Abitibi Plains Lake Timiskaming Lowland Algonquin-Lake Nipissing Southern Laurentians Rupert River Plateau Central Laurentians Northern Minnesota Adirondack Mountains Mean Temperatures...
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