DataGridView::EditMode Property

 

Gets or sets a value indicating how to begin editing a cell.

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

public:
property DataGridViewEditMode EditMode {
	DataGridViewEditMode get();
	void set(DataGridViewEditMode value);
}

Property Value

Type: System.Windows.Forms::DataGridViewEditMode

One of the DataGridViewEditMode values. The default is EditOnKeystrokeOrF2.

Exception Condition
InvalidEnumArgumentException

The specified value when setting this property is not a valid DataGridViewEditMode value.

Exception

The specified value when setting this property would cause the control to enter edit mode, but initialization of the editing cell value failed and either there is no handler for the DataError event or the handler has set the DataGridViewDataErrorEventArgs::ThrowException property to true. The exception object can typically be cast to type FormatException.

All DataGridViewEditMode values except for EditProgrammatically also allow a user to double-click a cell to begin editing it.

The following code example demonstrates how to initialize a simple data-bound DataGridView. It also demonstrates how to set the EditMode property.

#using <System.Transactions.dll>
#using <System.EnterpriseServices.dll>
#using <System.Xml.dll>
#using <System.Drawing.dll>
#using <System.dll>
#using <System.Windows.Forms.dll>
#using <System.Data.dll>

using namespace System;
using namespace System::Data;
using namespace System::Data::SqlClient;
using namespace System::Windows::Forms;
using namespace System::Drawing;
public ref class Form1: public System::Windows::Forms::Form
{
public:
   Form1()
      : Form()
   {

      //This call is required by the Windows Form Designer.
      InitializeComponent();
      InitializeDataGridView();

      //Add any initialization after the InitializeComponent() call
   }


protected:

   ~Form1()
   {
      if ( components != nullptr )
      {
         delete components;
      }
   }

private:
   System::Windows::Forms::DataGridView ^ dataGridView1;
   System::Windows::Forms::BindingSource ^ bindingSource1;

   //Required by the Windows Form Designer
   System::ComponentModel::IContainer^ components;

   //NOTE: The following procedure is required by the Windows Form Designer
   //It can be modified using the Windows Form Designer.  
   //Do not modify it using the code editor.

   [System::Diagnostics::DebuggerNonUserCode]
   void InitializeComponent()
   {
      this->dataGridView1 = gcnew System::Windows::Forms::DataGridView;
      this->bindingSource1 = gcnew System::Windows::Forms::BindingSource;
      this->SuspendLayout();

      //
      //DataGridView1
      //
      this->dataGridView1->Location = System::Drawing::Point( 96, 71 );
      this->dataGridView1->Name = "DataGridView1";
      this->dataGridView1->Size = System::Drawing::Size( 321, 286 );
      this->dataGridView1->TabIndex = 0;

      //
      //Form1
      //
      this->ClientSize = System::Drawing::Size( 518, 413 );
      this->Controls->Add( this->dataGridView1 );
      this->Name = "Form1";
      this->Text = "Form1";
      this->ResumeLayout( false );
   }

internal:

   static property Form1^ GetInstance 
   {
      Form1^ get()
      {
         if ( m_DefaultInstance == nullptr || m_DefaultInstance->IsDisposed )
         {
            System::Threading::Monitor::Enter( m_SyncObject );
            try
            {
               if ( m_DefaultInstance == nullptr || m_DefaultInstance->IsDisposed )
               {
                  m_DefaultInstance = gcnew Form1;
               }
            }
            finally
            {
               System::Threading::Monitor::Exit( m_SyncObject );
            }
         }

         return m_DefaultInstance;
      }
   }

private:
   static Form1^ m_DefaultInstance;
   static Object^ m_SyncObject = gcnew Object;

   void InitializeDataGridView()
   {
      try
      {
         // Set up the DataGridView.
         dataGridView1->Dock = DockStyle::Fill;

         // Automatically generate the DataGridView columns.
         dataGridView1->AutoGenerateColumns = true;

         // Set up the data source.
         bindingSource1->DataSource = GetData( "Select * From Products" );
         dataGridView1->DataSource = bindingSource1;

         // Automatically resize the visible rows.
         dataGridView1->AutoSizeRowsMode = DataGridViewAutoSizeRowsMode::DisplayedCellsExceptHeaders;

         // Set the DataGridView control's border.
         dataGridView1->BorderStyle = BorderStyle::Fixed3D;

         // Put the cells in edit mode when user enters them.
         dataGridView1->EditMode = DataGridViewEditMode::EditOnEnter;
      }
      catch ( SqlException^ ) 
      {
         MessageBox::Show( "To run this sample replace connection.ConnectionString"
         " with a valid connection string to a Northwind"
         " database accessible to your system.", "ERROR", MessageBoxButtons::OK, MessageBoxIcon::Exclamation );
         System::Threading::Thread::CurrentThread->Abort();
      }
      catch ( System::Exception^ ex ) 
      {
         MessageBox::Show( ex->ToString() );
      }
   }


   DataTable^ GetData( String^ sqlCommand )
   {
      String^ connectionString = "Integrated Security=SSPI;Persist Security Info=False;"
      "Initial Catalog=Northwind;Data Source= localhost";
      SqlConnection^ northwindConnection = gcnew SqlConnection( connectionString );
      SqlCommand^ command = gcnew SqlCommand( sqlCommand,northwindConnection );
      SqlDataAdapter^ adapter = gcnew SqlDataAdapter;
      adapter->SelectCommand = command;
      DataTable^ table = gcnew DataTable;
      adapter->Fill( table );
      return table;
   }
};

int main()
{
   Application::Run( gcnew Form1 );
}

.NET Framework
Available since 2.0
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