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- #Universal database table address how to
- #Universal database table address code
- #Universal database table address windows
This method takes one argument of type DataTable: dtSet = new DataSet("customers") After that, you make the id column the primary key by the setting DataTable.PrimaryKey as the id column: PrimaryKe圜olumns = custTable.Columns Īfter creating a DataTable you add it to a DataSet using the method. Similar to the id column, you add two more columns, Name and Address, of string type to the table. As discussed earlier, to add a column to a DataTable, you create a DataColumn object, set its properties, and then call the method. The id column has properties such as ReadOnly and Unique. Also displays Customers table data in a DataGridView controlĭataColumn custCol = ĭataColumn orderCol = ĭtRelation = new DataRelation("CustOrderRelation ", custCol, orderCol) ĭ(dtRelation) īs.DataSource = dtSet.Tables Īs you can see from the CreateCustomersTable method in listing 2, it creates the Customers table using DataTable and adds id, Name and Address columns to the table. This method creates a customer order relationship and data tables Create CustId column which Reprence Cust Id fromĭtRow = "Monthly magazine" ĭtRow = "Monthly Magazine" MyDataRow = "279 P. Avenue, Bridgetown, PA" ĭataTable ordersTable = new DataTable("Orders") ĭtColumn.DataType = Type.GetType("System.Int32") ĭtColumn.DataType = Type.GetType("System.String") MyDataRow = "43 Lanewood Road, cito, CA" I add three customers with their addresses, names and ids Add data rows to the custTable using NewRow method PrimaryKe圜olumns = custTable.Columns ĬustTable.PrimaryKey = PrimaryKe圜olumns Make id column the primary key column.ĭataColumn PrimaryKe圜olumns = new DataColumn / Add column to the DataColumnCollection. Add column to the DataColumnCollection. Listing 2: Customer/orders relationship example // Create Customers tableĭataTable custTable = new DataTable("Customers") Listing 2 shows All Three CreateCustomerTable, CreateOrderTable, and BindData methods. The BindData method creates a customer/ orders relationship and binds the data to a DataGrid control using DataSet. The Create OrdersTable method creates the Orders table with order Id, cust Id, Name, and Description columns and adds data it. In listing 2, the CreateCustomersTable method creates the Customers data table with id, Name, and Address columns and adds three data rows to it.
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#Universal database table address code
See the following code public class Form1 : You also need to add a DataSet variable, dtSet, in the beginning of your form. Listing 1: Form's constructor calling CreateCustomers Table CreateOrdersTable, and BindData public Form1() The form constructor looks like listing 1. Now, on the Form's constructor, call the following three methods, CreateCustomersTable(), CreateOrdersTable(), and BindData() methods after InitializeComponent() method.
#Universal database table address windows
Open Visual Studio 2017 or later version and create a Windows Forms application using C#.Īdd a DataGridView control to the Form and resize your control as you see it fits. After that, I will add data to the DataTables and bind a DataTable to a DataGridView control to load and display data in the control. In this code, I'll create two DataTable objects, Customers and Orders, and set a relationship between them. You can also access the child and parent relationship using ChildRelation and ParentRelation objects. The Constraints property provides access to all the constraints that a data table has. You can also apply filters and sorting on a DataTable. The DataTable class provides methods and properties to remove, copy, and clone data tables. Gets an array of rows based on the criteria Reject all changed made after last AcceptChanges was called Table 2: The Data Table Class Methods METHODĬommits all the changes made since last AcceptChanges was calledĬreates a clone of a DataTable including its schemaĬreates a new row, which is later added by calling the Rows.Add method Table 2 describes some of the common DataTable methods. Represents an array of columns that function as primary key for the table Returns parent relations for the data table Return child relations for the data table Table 1: The Data Table class properties PROPERTY Table 1 describes some of the common DataTable properties.
#Universal database table address how to
You will also learn how to create a DataTable columns and rows, add data to a DataTable and bind a DataTable to a DataGridView control using data binding. The code sample in this artilce explains how to create a DataTable at run-time in C#. The DataTable class in C# ADO.NET is a database table representation and provides a collection of columns and rows to store data in a grid form.