How to handle click event in Button Column in Datagridview

Question

I am developing a windows application using C   I am using DataGridView to display data  I have added a button column in that  I want to know how can I handle click event on that button in DataGridView

User · Answer

Here is my code snippet to fire the click event and pass the value to another form    private void hearingsDataGridView CellContentClick object sender  DataGridViewCellEventArgs e                var senderGrid    DataGridView sender           if  senderGrid Columns e ColumnIndex  is DataGridViewButtonColumn  amp  amp              e RowIndex  gt   0                          TODO - Button Clicked - Execute Code Here              string x myDataGridView Rows e RowIndex  Cells 3  Value ToString                Form1 myform   new Form1                myform rowid   int x              myform Show

User · Answer

That s answered fully here for WinForms  DataGridViewButtonColumn Class  and here  How to  Respond to Button Events in a GridView Control  for Asp Net depending on the control you re actually using    Your question says DataGrid  but you re developing a Windows app  so the control you d be using there is a DataGridView

User · Answer

You will add button column like this in your dataGridView          DataGridViewButtonColumn mButtonColumn0   new DataGridViewButtonColumn            mButtonColumn0 Name    ColumnA           mButtonColumn0 Text    ColumnA             if  dataGridView Columns  ColumnA      null                        dataGridView Columns Insert 2  mButtonColumn0               Then you can add some actions inside cell click event  I found this is easiest way of doing it        private void dataGridView CellClick object sender  DataGridViewCellEventArgs e                 int rowIndex   e RowIndex          int columnIndex   e ColumnIndex           if  dataGridView Rows rowIndex  Cells columnIndex  Selected    true  amp  amp  dataGridView Columns columnIndex  Name     ColumnA                                    do any thing here                       I found that Cell Click event is automatically subscribed often  So I did not need this code below  However  if your cell click event is not subscribed  then add this line of code for your dataGridView        this dataGridView CellClick    new System Windows Forms DataGridViewCellEventHandler this dataGridView CellClick

User · Answer

This solves my problem   private void dataGridViewName CellContentClick object sender  DataGridViewCellEventArgs e                  Your code

User · Answer

You ve added a button to your DataGridView and you want to run some code when it s clicked  Easy peasy - just follow these steps  Don ts  First  here s what NOT to do  I would avoid the suggestions in some of the other answers here and even provided by the documentation at MSDN to hardcode the column index or column name in order to determine if a button was clicked   The click event registers for the entire grid  so somehow you need to determine that a button was clicked  but you should not do so by assuming that your button lives in a particular column name or index    there s an easier way    Also  be careful which event you want to handle   Again  the documentation and many examples get this wrong   Most examples handle the CellClick event which will fire   when any part of a cell is clicked      but will also fire whenever the row header is clicked   This necessitates adding extra code simply to determine if the e RowIndex value is less than 0 Instead handle the CellContentClick which only occurs   when the content within a cell is clicked  For whatever reason  the column header is also considered  content  within a cell  so we ll still have to check for that below  Dos  So here s what you should do  First  cast the sender to type DataGridView to expose it s internal properties at design time   You can modify the type on the parameter  but that can sometimes make adding or removing handlers tricky  Next  to see if a button was clicked  just check to make sure that the column raising the event is of type DataGridViewButtonColumn   Because we already cast the sender to type DataGridView  we can get the Columns collection and select the current column using e ColumnIndex   Then check if that object is of type DataGridViewButtonColumn  Of course  if you need to distinguish between multiple buttons per grid  you can then select based on the column name or index  but that shouldn t be your first check   Always make sure a button was clicked first and then handle anything else appropriately   In most cases where you only have a single button per grid  you can jump right off to the races  Putting it all together  C   private void dataGridView1 CellContentClick object sender  DataGridViewCellEventArgs e        var senderGrid    DataGridView sender       if  senderGrid Columns e ColumnIndex  is DataGridViewButtonColumn  amp  amp          e RowIndex  gt   0                  TODO - Button Clicked - Execute Code Here          VB  Private Sub DataGridView1 CellContentClick sender As System Object  e As DataGridViewCellEventArgs                                               Handles DataGridView1 CellContentClick     Dim senderGrid   DirectCast sender  DataGridView       If TypeOf senderGrid Columns e ColumnIndex  Is DataGridViewButtonColumn AndAlso        e RowIndex  gt   0 Then          TODO - Button Clicked - Execute Code Here     End If  End Sub   Update 1 - Custom Event If you wanted to have a little bit of fun  you can add your own event to be raised whenever a button is clicked on the DataGrid   You can t add it to the DataGrid itself  without getting messy with inheritance etc   but you can add a custom event to your form and fire it when appropriate   It s a little more code  but the upside is that you ve separated out what you want to do when a button is clicked with how to determine if a button was clicked  Just declare an event  raise it when appropriate  and handle it    It will look like this  Event DataGridView1ButtonClick sender As DataGridView  e As DataGridViewCellEventArgs   Private Sub DataGridView1 CellContentClick sender As System Object  e As DataGridViewCellEventArgs  Handles DataGridView1 CellContentClick     Dim senderGrid   DirectCast sender  DataGridView      If TypeOf senderGrid Columns e ColumnIndex  Is DataGridViewButtonColumn AndAlso e RowIndex  gt   0 Then         RaiseEvent DataGridView1ButtonClick senderGrid  e      End If End Sub  Private Sub DataGridView1 ButtonClick sender As DataGridView  e As DataGridViewCellEventArgs  Handles Me DataGridView1ButtonClick      TODO - Button Clicked - Execute Code Here End Sub   Update 2 - Extended Grid What would be great is if we were working with a grid that just did these things for us   We could answer the initial question easily  you ve added a button to your DataGridView and you want to run some code when it s clicked   Here s an approach that extends the DataGridView   It might not be worth the hassle of having to deliver a custom control with every library  but at least it maximally reuses the code used for determining if a button was clicked  Just add this to your assembly  Public Class DataGridViewExt   Inherits DataGridView      Event CellButtonClick sender As DataGridView  e As DataGridViewCellEventArgs       Private Sub CellContentClicked sender As System Object  e As DataGridViewCellEventArgs  Handles Me CellContentClick         If TypeOf Me Columns e ColumnIndex  Is DataGridViewButtonColumn AndAlso e RowIndex  gt   0 Then             RaiseEvent CellButtonClick Me  e          End If     End Sub  End Class  That s it   Never touch it again   Make sure your DataGrid is of type DataGridViewExt which should work exactly the same as a DataGridView   Except it will also raise an extra event that you can handle like this  Private Sub DataGridView1 ButtonClick sender As DataGridView  e As DataGridViewCellEventArgs                                          Handles DataGridView1 CellButtonClick      TODO - Button Clicked - Execute Code Here End Sub

User · Answer

Most voted solution is wrong  as cannot work with few buttons in one row   Best solution will be the following code   private void dataGridView CellContentClick object sender  DataGridViewCellEventArgs e                        var senderGrid    DataGridView sender               if  e ColumnIndex    senderGrid Columns  Opn   Index  amp  amp  e RowIndex  gt   0                                MessageBox Show  Opn Click                               if  e ColumnIndex    senderGrid Columns  VT   Index  amp  amp  e RowIndex  gt   0                                MessageBox Show  VT Click

User · Answer

just add ToList   method to end of your list  where bind to datagridview DataSource   dataGridView1 DataSource   MyList ToList

User · Answer

Here s the better answer   You can t implement a button clicked event for button cells in a DataGridViewButtonColumn  Instead  you use the DataGridView s CellClicked event and determine if the event fired for a cell in your DataGridViewButtonColumn  Use the event s DataGridViewCellEventArgs RowIndex property to find out which row was clicked   private void dataGridView1 CellClick object sender  DataGridViewCellEventArgs e         Ignore clicks that are not in our    if  e ColumnIndex    dataGridView1 Columns  MyButtonColumn   Index  amp  amp  e RowIndex  gt   0        Console WriteLine  Button on row  0  clicked   e RowIndex           found here  button click event in datagridview

User · Answer

For example for ClickCell Event in Windows Forms   private void GridViewName CellClick object sender  DataGridViewCellEventArgs e                                 Capture index Row Event                     int  numberRow   Convert ToInt32 e RowIndex                        assign the value plus the desired column example 1                     var valueIndex  GridViewName Rows numberRow   Cells 1  Value                      MessageBox Show  ID     valueIndex                       Regards

User · Answer

You can try this one  you wouldn t care much about the ordering of the columns   private void TheGrid CellContentClick object sender  DataGridViewCellEventArgs e        if  TheGrid Columns e ColumnIndex  HeaderText     Edit                    to do  edit actions here         MessageBox Show  Edit

User · Answer

In case someone is using C   or see Note about VB NET below  and has reached this point  but is still stuck  please read on   Joshua s answer helped me  but not all the way   You will notice Peter asked  Where would you get the button from    but was unanswered   The only way it worked for me was to do one of the following to add my event hander  after setting my DataGridView s DataSource to my DataTable and after adding the DataGridViewButtonColumn to the DataGridView    Either   dataGridView1 CellClick    new DataGridViewCellEventHandler dataGridView1 CellClick     or   dataGridView1 CellContentClick    new DataGridViewCellEventHandler dataGridView1 CellContentClick     And then add the handler method  either dataGridView1 CellClick or dataGridView1 CellContentClick  shown in the various answers above   Note  VB NET is different from C  in this respect  because we can simply add a Handles clause to our method s signature or issue an AddHandler statement as described in the Microsoft doc s  How to  Call an Event Handler in Visual Basic

User · Answer

A bit late to the table here  but in c   vs2013  you don t need to use column names either  in fact a lot of the extra work that some people propose is completely unnecessary   The column is actually created as an member of the container  the form  or usercontrol that you ve put the DataGridView into    From the designer code  the stuff you re not supposed to edit except when the designer breaks something   you d see something like   this curvesList Columns AddRange new System Windows Forms DataGridViewColumn             this enablePlot          this desc          this unit          this min          this max          this color                 color     this color HeaderText    Colour   this color MinimumWidth   40  this color Name    color   this color ReadOnly   true  this color Width   40         private System Windows Forms DataGridViewButtonColumn color    So in the CellContentClick handler  apart from ensuring that the row index is not 0  you just need to check whether the clicked column is in fact the one you want by comparing object references     private void curvesList CellContentClick object sender       DataGridViewCellEventArgs e        var senderGrid    DataGridView sender      var column   senderGrid Columns e ColumnIndex       if  e RowIndex  gt   0                if   object column     object color                        colorDialog Color   Color Blue                  colorDialog ShowDialog                        Note that the beauty of this is that any name changes will be caught by the compiler   If you index with a text name that changes  or that you capitalize incorrectly  you re bound for runtime issues   Here you actually use the name of an object  that the designer creates based on the name you supplied   But any mismatch will be brought to your attention by the compiler

User · Answer

fine  i ll bite   you ll need to do something like this -- obviously its all metacode   button Click    new ButtonClickyHandlerType IClicked My Button method    that  hooks  the IClicked My Button method method up to the button s Click event   Now  every time the event is  fired  from within the owner class  our method will also be fired   In the IClicked MyButton method you just put whatever you want to happen when you click it   public void IClicked My Button method object sender  eventhandlertypeargs e          do your stuff in here   go for it      foreach  Process process in Process GetProcesses               process Kill          something like that   don t really do that   obviously      The actual details here are up to you  but if there is anything else you are missing conceptually let me know and I ll try to help

User · Answer

Assuming for example DataGridView has columns as given below and its data bound items are of type PrimalPallet you can use solution given below         private void dataGridView1 CellContentClick  object sender  DataGridViewCellEventArgs e         if   e RowIndex  gt   0                 if   e ColumnIndex    this colDelete Index                         var pallet   this dataGridView1 Rows  e RowIndex   DataBoundItem as PrimalPallet              this DeletePalletByID  pallet ID                      else if   e ColumnIndex    this colEdit Index                         var pallet   this dataGridView1 Rows  e RowIndex   DataBoundItem as PrimalPallet                 etc                      It s safer to access columns directly rather than using dataGridView1 Columns  MyColumnName   and there is no need to parse sender to the DataGridView as it s not needed

[c#] How to handle click event in Button Column in Datagridview?

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