DataGridBoolColumn::EnterNullValue Method ()

 
Use BaseTrue

Enters a Value into the column.

Namespace:   System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

public protected:
virtual void EnterNullValue() override

Exception Condition
Exception

The AllowNull property is set to false.

To set the actual value used when entering a null value, use the NullValue property.

The following code example uses the EnterNullValue to enter a null value into the column.

private:

   void EnterNull()
   {

      // Creates an instance of a class derived from DataGridBoolColumn.
      MyDataGridBoolColumn^ colBool;
      colBool = dynamic_cast<MyDataGridBoolColumn^>(dataGrid1->TableStyles[ 0 ]->GridColumnStyles[ 2 ]);
      colBool->CallEnterNullValue();
   }


internal:

   // Class derived from DataGridBoolColumn.
   ref class MyDataGridBoolColumn: public DataGridBoolColumn
   {
   public:
      void CallEnterNullValue()
      {
         this->EnterNullValue();
      }

   };

.NET Framework
Available since 1.1
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