Adding CheckBox Control to DataGrid Control

Both for standalone applications and for web-based applications, accessing data has become a major programming task for modern software programming. Microsoft's ADO.NET technology has a solution for many of the problems associated with data access. DataGrid control holds an important status among the important parts of ADO.NET. We will find a section below on DataGrid and other related classes and how the user can play with them. The versatile DataGrid control displays tabular data and supports selecting, sorting, and editing the data. Each data field is displayed in a separate column in the order it is stored in the database.

The combo box control was added to the Functional Area Column (for each Row) dynamically.

//call this below method after initialize component 
private void PopulateShortlistGrid()     
{       
    DataColumn        dtcShortlist;
    //Combo box control added as discussed above   
    cmbWorkflow            = new ComboBox();
    cmbWorkflow.Cursor        = System.Windows.Forms.Cursors.Arrow;
    cmbWorkflow.DropDownStyle    = System.Windows.Forms.ComboBoxStyle.DropDownList; 
    cmbWorkflow.Dock            = DockStyle.Fill; 
    dtbShortlist            = new DataTable("ShortList"); 
    string strColumnName        = null;
    string []arraystringSearch        = null; 
    arraystringSearch            = new string[4]; 
    arraystringSearch[1]            = "Candidate Code"; 
    arraystringSearch[2]            = "Candidate Name";
    arraystringSearch[3]            = "Workflow";       
    //Adding a check box control in the first column of the data grid   
    //create a Data Column object with Column Name as “Select”   
    DataColumn    dtcolCheck        = new DataColumn("Select"); 
    //Set the data type of the checkbox i.e. to Boolean 
    dtcolCheck.DataType            = System.Type.GetType("System.Boolean"); 
    //Set its default value as false 
    dtcolCheck.DefaultValue        = false; 
    //add the above check box column to the data table 
    dtbShortlist.Columns.Add(dtcolCheck); 
    //Also add the other three columns i.e. Candidate Code, Candidate //Name and Workflow respectively 
    for(int intI=1; intI< 4;intI++) 
    {               
        strColumnName    = arraystringSearch[intI];
        dtcolShortlist    = new DataColumn(strColumnName);
        dtcolShortlist.DataType    = System.Type.GetType("System.String");                   
        dtbShortlist.Columns.Add(dtcolShortlist);
    } 
    dgdShortList.DataSource    = dtbShortlist;       
}

Focusing a particular cell in the DataGrid

We have to focus on the TextBox Control that is present in each cell of the DataGrid created above to focus a particular cell in the grid created above. Follow the steps followed below to take the text box present in the grid cell which we want to focus:

//Bring the focus to the grid in which the cell is present (where you
want //the focus)
dgdLoad.Focus(); 
//Create a DataGrid Cell object and take the Cell by passing Row and //Column number respectively
DataGridCell dgcell = new DataGridCell(1,1); //here it is 2ndrow, 2nd Column 
//Make the current cell of the grid as the cell you have taken above
//the cell where you need the focus to be
dgdLoad.CurrentCell = dgcell;
//To take the text Box of the cell where u want the focus to be take
//it from the Table Styles of the grid and in that the column style
//by passing the column number where youu wants the focus to be 
DataGridTextBoxColumn dgtb = (DataGridTextBoxColumn)dgdLoad.TableStyles[0].GridColumnStyles[2];
//Focus on the text box i.e. in turn on cell where u need the focus   
dgtb.TextBox.Focus();