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Proprietà Control.DataBindings
Spazio dei nomi: System.Windows.Forms
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
Valore proprietà
Tipo: System.Windows.Forms.ControlBindingsCollectionImplementa
IBindableComponent.DataBindingsprotected void BindControls() { /* Create two Binding objects for the first two TextBox controls. The data-bound property for both controls is the Text property. The data source is a DataSet (ds). The data member is specified by a navigation path in the form : TableName.ColumnName. */ textBox1.DataBindings.Add(new Binding ("Text", ds, "customers.custName")); textBox2.DataBindings.Add(new Binding ("Text", ds, "customers.custID")); /* Bind the DateTimePicker control by adding a new Binding. The data member of the DateTimePicker is specified by a navigation path in the form: TableName.RelationName.ColumnName. */ DateTimePicker1.DataBindings.Add(new Binding("Value", ds, "customers.CustToOrders.OrderDate")); /* Create a new Binding using the DataSet and a navigation path(TableName.RelationName.ColumnName). Add event delegates for the Parse and Format events to the Binding object, and add the object to the third TextBox control's BindingsCollection. The delegates must be added before adding the Binding to the collection; otherwise, no formatting occurs until the Current object of the BindingManagerBase for the data source changes. */ Binding b = new Binding ("Text", ds, "customers.custToOrders.OrderAmount"); b.Parse += new ConvertEventHandler(CurrencyStringToDecimal); b.Format += new ConvertEventHandler(DecimalToCurrencyString); textBox3.DataBindings.Add(b); /*Bind the fourth TextBox to the Value of the DateTimePicker control. This demonstrates how one control can be bound to another.*/ textBox4.DataBindings.Add("Text", DateTimePicker1,"Value"); BindingManagerBase bmText = this.BindingContext[ DateTimePicker1]; /* Print the Type of the BindingManagerBase, which is a PropertyManager because the data source returns only a single property value. */ Console.WriteLine(bmText.GetType().ToString()); // Print the count of managed objects, which is 1. Console.WriteLine(bmText.Count); // Get the BindingManagerBase for the Customers table. bmCustomers = this.BindingContext [ds, "Customers"]; /* Print the Type and count of the BindingManagerBase. Because the data source inherits from IBindingList, it is a RelatedCurrencyManager (derived from CurrencyManager). */ Console.WriteLine(bmCustomers.GetType().ToString()); Console.WriteLine(bmCustomers.Count); /* Get the BindingManagerBase for the Orders of the current customer using a navigation path: TableName.RelationName. */ bmOrders = this.BindingContext[ds, "customers.CustToOrders"]; }
Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (ruoli di base del server non supportati), Windows Server 2008 R2 (ruoli di base del server supportati con SP1 o versione successiva, Itanium non supportato)
.NET Framework non supporta tutte le versioni di ciascuna piattaforma. Per un elenco delle versioni supportate, vedere Requisiti di sistema di .NET Framework.