right click context menu for datagridview

Question

I have a datagridview in a  NET winform app  I would like to rightclick on a row and have a menu pop up  Then i would like to select things such as copy  validate  etc  How do i make A  a menu pop up B  find which row was right clicked  I know i could use selectedIndex but i should be able to right click without changing what is selected  right now i could use selected index but if there is a way to get the data without changing what is selected then that would be useful

User · Answer

While this question is old  the answers aren t proper  Context menus have their own events on DataGridView  There is an event for row context menu and cell context menu   The reason for which these answers aren t proper is they do not account for different operation schemes  Accessibility options  remote connections  or Metro Mono Web WPF porting might not work and keyboard shortcuts will down right fail  Shift F10 or Context Menu key    Cell selection on right mouse click has to be handled manually  Showing the context menu does not need to be handled as this is handled by the UI   This completely mimics the approach used by Microsoft Excel  If a cell is part of a selected range  the cell selection doesn t change and neither does CurrentCell  If it isn t  the old range is cleared and the cell is selected and becomes CurrentCell   If you are unclear on this  CurrentCell is where the keyboard has focus when you press the arrow keys  Selected is whether it is part of SelectedCells  The context menu will show on right click as handled by the UI    private void dgvAccount CellMouseDown object sender  DataGridViewCellMouseEventArgs e        if  e ColumnIndex    -1  amp  amp  e RowIndex    -1  amp  amp  e Button    System Windows Forms MouseButtons Right                DataGridViewCell c    sender as DataGridView  e ColumnIndex  e RowIndex           if   c Selected                        c DataGridView ClearSelection                c DataGridView CurrentCell   c              c Selected   true                      Keyboard shortcuts do not show the context menu by default  so we have to add them in   private void dgvAccount KeyDown object sender  KeyEventArgs e        if   e KeyCode    Keys F10  amp  amp  e Shift     e KeyCode    Keys Apps                e SuppressKeyPress   true          DataGridViewCell currentCell    sender as DataGridView  CurrentCell          if  currentCell    null                        ContextMenuStrip cms   currentCell ContextMenuStrip              if  cms    null                                Rectangle r   currentCell DataGridView GetCellDisplayRectangle currentCell ColumnIndex  currentCell RowIndex  false                   Point p   new Point r X   r Width  r Y   r Height                   cms Show currentCell DataGridView  p                                     I ve reworked this code to work statically  so you can copy and paste them into any event   The key is to use CellContextMenuStripNeeded since this will give you the context menu   Here s an example using CellContextMenuStripNeeded where you can specify which context menu to show if you want to have different ones per row   In this context MultiSelect is True and SelectionMode is FullRowSelect  This is just for the example and not a limitation   private void dgvAccount CellContextMenuStripNeeded object sender  DataGridViewCellContextMenuStripNeededEventArgs e        DataGridView dgv    DataGridView sender       if  e RowIndex    -1    e ColumnIndex    -1          return      bool isPayment   true      bool isCharge   true      foreach  DataGridViewRow row in dgv SelectedRows                if   string row Cells  P C   Value     C               isPayment   false          else if   string row Cells  P C   Value     P               isCharge   false            if  isPayment          e ContextMenuStrip   cmsAccountPayment      else if  isCharge          e ContextMenuStrip   cmsAccountCharge     private void cmsAccountPayment Opening object sender  CancelEventArgs e        int itemCount   dgvAccount SelectedRows Count      string voidPaymentText     amp Void Payment      to be localized     if  itemCount  gt  1          voidPaymentText     amp Void Payments      to be localized     if  tsmiVoidPayment Text    voidPaymentText     avoid possible flicker         tsmiVoidPayment Text   voidPaymentText     private void cmsAccountCharge Opening object sender  CancelEventArgs e        int itemCount   dgvAccount SelectedRows Count      string deleteChargeText     amp Delete Charge     to be localized     if  itemCount  gt  1          deleteChargeText     amp Delete Charge     to be localized     if  tsmiDeleteCharge Text    deleteChargeText     avoid possible flicker         tsmiDeleteCharge Text   deleteChargeText     private void tsmiVoidPayment Click object sender  EventArgs e        int paymentCount   dgvAccount SelectedRows Count      if  paymentCount    0          return       bool voidPayments   false      string confirmText    Are you sure you would like to void this payment       to be localized     if  paymentCount  gt  1          confirmText    Are you sure you would like to void these payments       to be localized     voidPayments    MessageBox Show                      confirmText                       Confirm      to be localized                     MessageBoxButtons YesNo                      MessageBoxIcon Warning                      MessageBoxDefaultButton Button2                         DialogResult Yes       if  voidPayments                   SQLTransaction Start         foreach  DataGridViewRow row in dgvAccount SelectedRows                          do Work                        private void tsmiDeleteCharge Click object sender  EventArgs e        int chargeCount   dgvAccount SelectedRows Count      if  chargeCount    0          return       bool deleteCharges   false      string confirmText    Are you sure you would like to delete this charge       to be localized     if  chargeCount  gt  1          confirmText    Are you sure you would like to delete these charges       to be localized     deleteCharges    MessageBox Show                      confirmText                       Confirm      to be localized                     MessageBoxButtons YesNo                      MessageBoxIcon Warning                      MessageBoxDefaultButton Button2                         DialogResult Yes       if  deleteCharges                   SQLTransaction Start         foreach  DataGridViewRow row in dgvAccount SelectedRows                          do Work

User · Answer

Simply drag a ContextMenu or ContextMenuStrip component into your form and visually design it  then assign it to the ContextMenu or ContextMenuStrip property of your desired control

User · Answer

You can use the CellMouseEnter and CellMouseLeave to track the row number that the mouse is currently hovering over   Then use a ContextMenu object to display you popup menu  customised for the current row   Here s a quick and dirty example of what I mean     private void dataGridView1 MouseClick object sender  MouseEventArgs e        if  e Button    MouseButtons Right                ContextMenu m   new ContextMenu            m MenuItems Add new MenuItem  Cut             m MenuItems Add new MenuItem  Copy             m MenuItems Add new MenuItem  Paste              int currentMouseOverRow   dataGridView1 HitTest e X e Y  RowIndex           if  currentMouseOverRow  gt   0                        m MenuItems Add new MenuItem string Format  Do something to row  0    currentMouseOverRow ToString                          m Show dataGridView1  new Point e X  e Y

User · Answer

For the position for the context menu  y found the problem that I needed a it to be relative to the DataGridView  and the event I needed to use gives the poistion relative to the cell clicked  I haven t found a better solution so I implemented this function in the commons class  so I call it from wherever I need   It s quite tested and works well  I Hope you find it useful            lt summary gt          When DataGridView CellMouseClick ocurs  it gives the position relative to the cell clicked  but for context menus you need the position relative to the DataGridView          lt  summary gt           lt param name  dgv  gt DataGridView that produces the event lt  param gt           lt param name  e  gt Event arguments produced lt  param gt           lt returns gt The Location of the click  relative to the DataGridView lt  returns gt      public static Point PositionRelativeToDataGridViewFromDataGridViewCellMouseEventArgs DataGridView dgv  DataGridViewCellMouseEventArgs e                int x   e X          int y   e Y          if  dgv RowHeadersVisible              x    dgv RowHeadersWidth          if  dgv ColumnHeadersVisible              y    dgv ColumnHeadersHeight          for  int j   0  j  lt  e ColumnIndex  j                if  dgv Columns j  Visible                  x    dgv Columns j  Width          for  int i   0  i  lt  e RowIndex  i                if  dgv Rows i  Visible                  y    dgv Rows i  Height          return new Point x  y

User · Answer

Use the CellMouseDown event on the DataGridView  From the event handler arguments you can determine which cell was clicked  Using the PointToClient   method on the DataGridView you can determine the relative position of the pointer to the DataGridView  so you can pop up the menu in the correct location    The DataGridViewCellMouseEvent parameter just gives you the X and Y relative to the cell you clicked  which isn t as easy to use to pop up the context menu    This is the code I used to get the mouse position  then adjust for the position of the DataGridView   var relativeMousePosition   DataGridView1 PointToClient Cursor Position   this ContextMenuStrip1 Show DataGridView1  relativeMousePosition     The entire event handler looks like this   private void DataGridView1 CellMouseDown object sender  DataGridViewCellMouseEventArgs e           Ignore if a column or row header is clicked     if  e RowIndex    -1  amp  amp  e ColumnIndex    -1                if  e Button    MouseButtons Right                        DataGridViewCell clickedCell    sender as DataGridView  Rows e RowIndex  Cells e ColumnIndex                   Here you can do whatever you want with the cell             this DataGridView1 CurrentCell   clickedCell      Select the clicked cell  for instance                 Get mouse position relative to the vehicles grid             var relativeMousePosition   DataGridView1 PointToClient Cursor Position                   Show the context menu             this ContextMenuStrip1 Show DataGridView1  relativeMousePosition

User · Answer

Put a context menu on your form  name it  set captions etc  using the built-in editor Link it to your grid using the grid property ContextMenuStrip For your grid  create an event to handle CellContextMenuStripNeeded The Event Args e has useful properties e ColumnIndex  e RowIndex    I believe that e RowIndex is what you are asking for   Suggestion  when user causes your event CellContextMenuStripNeeded to fire  use e RowIndex to get data from your grid  such as the ID  Store the ID as the menu event s tag item   Now  when user actually clicks your menu item  use the Sender property to fetch the tag  Use the tag  containing your ID  to perform the action you need

User · Answer

Follow the steps    Create a context menu like   User needs to right click on the row to get this menu  We need to handle the  MouseClick event and  CellMouseDown event     selectedBiodataid is the variable that contains the selected row information   Here is the code   private void dgrdResults MouseClick object sender  MouseEventArgs e           if  e Button    System Windows Forms MouseButtons Right                                      contextMenuStrip1 Show Cursor Position X  Cursor Position Y               private void dgrdResults CellMouseDown object sender  DataGridViewCellMouseEventArgs e          handle the row selection on right click     if  e Button    MouseButtons Right                try                       dgrdResults CurrentCell   dgrdResults Rows e RowIndex  Cells e ColumnIndex                  Can leave these here - doesn t hurt             dgrdResults Rows e RowIndex  Selected   true              dgrdResults Focus                 selectedBiodataId   Convert ToInt32 dgrdResults Rows e RowIndex  Cells 1  Value                     catch  Exception                                 and the output would be

[c#] right click context menu for datagridview

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