DataGridTextBoxColumn Classe

Definição

public ref class DataGridTextBoxColumn : System::Windows::Forms::DataGridColumnStyle

public class DataGridTextBoxColumn : System.Windows.Forms.DataGridColumnStyle

type DataGridTextBoxColumn = class
    inherit DataGridColumnStyle

Public Class DataGridTextBoxColumn
Inherits DataGridColumnStyle

Herança

Object

MarshalByRefObject

Component

DataGridColumnStyle

DataGridTextBoxColumn

Exemplos

O exemplo seguinte cria um DataGridTextBoxColumn e adiciona-o ao GridColumnStylesCollection de um DataGrid. Para executar este exemplo de código, cole-o numa forma que tenha um DataGrid nome dataGrid1 e chame-o a partir do construtor do Form.

private:
   void AddColumn()
   {
      DataTable^ myTable = gcnew DataTable;
      
      // Add a new DataColumn to the DataTable.
      DataColumn^ myColumn = gcnew DataColumn( "myTextBoxColumn" );
      myColumn->DataType = System::Type::GetType( "System::String" );
      myColumn->DefaultValue = "default string";
      myTable->Columns->Add( myColumn );
      
      // Get the CurrencyManager for the DataTable.
      CurrencyManager^ cm = dynamic_cast<CurrencyManager^>(this->BindingContext[ myTable ]);
      
      // Use the CurrencyManager to get the PropertyDescriptor for the new column.
      System::ComponentModel::PropertyDescriptor^ pd = cm->GetItemProperties()[ "myTextBoxColumn" ];
      DataGridTextBoxColumn^ myColumnTextColumn;
      
      // Create the DataGridTextBoxColumn with the PropertyDescriptor.
      myColumnTextColumn = gcnew DataGridTextBoxColumn( pd );
      
      // Add the new DataGridColumn to the GridColumnsCollection.
      dataGrid1->DataSource = myTable;
      dataGrid1->TableStyles->Add( gcnew DataGridTableStyle );
      dataGrid1->TableStyles[ 0 ]->GridColumnStyles->Add( myColumnTextColumn );
   }

private void AddColumn()
{
     DataTable myTable= new DataTable();
 
     // Add a new DataColumn to the DataTable.
     DataColumn myColumn = new DataColumn("myTextBoxColumn");
     myColumn.DataType = System.Type.GetType("System.String");
     myColumn.DefaultValue="default string";
     myTable.Columns.Add(myColumn);
     // Get the CurrencyManager for the DataTable.
     CurrencyManager cm = (CurrencyManager)this.BindingContext[myTable];
     // Use the CurrencyManager to get the PropertyDescriptor for the new column.
     PropertyDescriptor pd = cm.GetItemProperties()["myTextBoxColumn"];
     DataGridTextBoxColumn myColumnTextColumn;
     // Create the DataGridTextBoxColumn with the PropertyDescriptor.
     myColumnTextColumn = new DataGridTextBoxColumn(pd);
     // Add the new DataGridColumn to the GridColumnsCollection.
     dataGrid1.DataSource= myTable;
     dataGrid1.TableStyles.Add(new DataGridTableStyle());
     dataGrid1.TableStyles[0].GridColumnStyles.Add(myColumnTextColumn);
 }

Private Sub AddColumn()
    Dim myTable As New DataTable()
    
    ' Add a new DataColumn to the DataTable.
    Dim myColumn As New DataColumn("myTextBoxColumn")
    myColumn.DataType = System.Type.GetType("System.String")
    myColumn.DefaultValue = "default string"
    myTable.Columns.Add(myColumn)
    ' Get the CurrencyManager for the DataTable.
    Dim cm As CurrencyManager = CType(Me.BindingContext(myTable), CurrencyManager)
    ' Use the CurrencyManager to get the PropertyDescriptor for the new column.
    Dim pd As PropertyDescriptor = cm.GetItemProperties()("myTextBoxColumn")
    Dim myColumnTextColumn As DataGridTextBoxColumn
    ' Create the DataGridTextBoxColumn with the PropertyDescriptor.
    myColumnTextColumn = New DataGridTextBoxColumn(pd)
    ' Add the new DataGridColumn to the GridColumnsCollection.
    dataGrid1.DataSource = myTable
    dataGrid1.TableStyles.Add(New DataGridTableStyle())
    dataGrid1.TableStyles(0).GridColumnStyles.Add(myColumnTextColumn)
End Sub

Observações

A DataGridTextBoxColumn classe deriva da abstract classe DataGridColumnStyle. Em tempo de execução, o DataGridTextBoxColumn host apresenta um DataGridTextBox controlo que permite aos utilizadores editar texto.

Propriedades especiais adicionadas à classe incluem Format, e HideEditBox. Estas propriedades permitem-lhe aceder ao controlo alojado DataGridTextBox e aos seus atributos, e definir o formato para mostrar valores.

Se a fonte de dados for um DataTable objeto contém DataColumn , a DataType propriedade de deve DataColumn ser definida para um tipo de dado que possa ser editado logicamente num controlo de caixa de texto. Os seguintes tipos de dados estão automaticamente associados a um DataGridTextBoxColumn : Byte, DateTime, Decimal, Double, Int16, Int32, Int64UInt16UInt64UInt32Single, , e .String

Ver também

• DataGridBoolColumn
• DataGridColumnStyle
• DataColumn
• DataType
• DataGrid
• DataGridTextBox
• TextBox