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Checkbox in DataGridView

Posted by  Awadhendra Tiwari
on    August-11-2011 16:36 PM

C# C# 
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Checkbox in DataGridView

In this article I will show you that how to check status of checkbox in datagridview that is it is checked or not. If checkbox in datagridview is checked then a message box display which have true and if checkbox in datagridview is unchecked then a message box display which have false value.

To complete this article drag and drop datagridview in your windows forms. Then on the load event of form write down following code to bind some values in datagrid view.

/// <summary>

        /// At the load event of form create a DataTable object

        /// and add two columns in that table. Data type of first

        /// column must be bool and second is string. When You

        /// bind the values of this datatable to datagrid then you

        /// see that that column whose data type is bool is converted

        /// into checkbox in datagridview and it have value true then

        /// it is checked and if it has false then it is unchecked.

        /// Below code explains that how to create DataTable object

        /// and how to bind that data in gridview.

        /// </summary>

        private void Form1_Load(object sender, EventArgs e)

        {

            DataTable dt = new DataTable();   //Creating data table object.

            dt.Columns.Add("Status", typeof(bool));   //Adding column in datatable and defining its datatype as a bool.

            dt.Columns.Add("Value", typeof(string));  //Adding another column in datatable.

 

            string[] data = { "AAA", "BBB", "CCC", "DDD", "EEE" };  //Creating an array of type string.

            bool[] status = { true, true, false, false, false };   //Creating an array of type bool.

            //Adding rows and value in DataTable.

            for (int i = 0; i < 5; i++)

            {

                DataRow dr = dt.NewRow(); 

                dr["Status"] = status[i];

                dr["Value"] = data[i];

                dt.Rows.Add(dr);

            }

            dataGridView1.DataSource = dt;  //Binding DataTable values in GridView.

        }

After binding values in DataGridView on the CellContentClick event of datagridview write down following code to display value of datagridview checkbox.

/// <summary>

        /// This event raised when we click on cell's content.

        /// Here I will show a message box containing true and

        /// false value when checkbox of datagridview is checked

        /// or unchecked accordingly.

        /// </summary>

        private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)

        {

            //This condition will make sure that this code execute if and only if checkbox cell is clicked.

            if (e.ColumnIndex == dataGridView1.Columns["Status"].Index)  //Checking index of checkbox column is equal to clickable cell index.

            {  

                dataGridView1.EndEdit();  //Stop editing of cell.

                MessageBox.Show("0 = " + dataGridView1.Rows[e.RowIndex].Cells[0].Value.ToString());  //Displaying value of that cell which is either true or false in this case.

            }

        }

Following snapshot will display result

When form is loaded the it display two columns in datagridview with some values.

Checkbox in DataGridView

When you click on checked checkbox then it will display a message box with true value and when you click on unchecked checkbox then it will display a message box with false value.

Checkbox in DataGridView

Checkbox in DataGridView

Thanks.
















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