how to insert combobox ,textbox data in datagridview

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Hi,
In my form combobox , textbox and button are there
when i clicked the button combobox data and text box data has to display in the datagridview.
here is my code.
DataTable dt = new DataTable();
dt.Columns.Add("IEC Parameter Name");
dt.Columns.Add("Modbus Address");
dt.Columns.Add("Variable Type");
dt.Columns.Add("Variable Description");

DataRow dr = dt.NewRow();

dr["IEC Parameter Name"] = cmb_RelayName.Text + "/" + Cmb_LogicalNode.Text + "." + cmb_CommonDataClass.Text + "." + cmb_DataAttribute.Text; ;
dr["Modbus Address"] = tb_Modbus.Text;
dr["Variable Type"] = cmb_varaibleType.Text;
dr["Variable Description"] = textBox2.Text;
dt.Rows.Add(dr);
dataGridView1.DataSource = dt;
but my problem is:
i am displaying the selected data in datagridview .When i click the button again with out closing the form i want to display previous data on first row and newly selected data on the second row like etc.. on button click event . how can i do this . Please suggest me.

Posted 3-Nov-14 0:16am

samyuktha.k

Updated 3-Nov-14 0:20am

v2

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Ullas_Krishnan · Accepted Answer · 2014-11-03T06:41:00

Hi,

1. Declare Datatable as a global variable
2. Create datatabele columns in the Form Load event
3. Add a new Data row and Binding it to the grid.

Please let me know is this you requested...

C#

namespace WFDS
{
    public partial class Form1 : Form
    {
        DataTable dt = new DataTable();
        int i = 0;
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {

            i++;
            DataRow dr = dt.NewRow();

            dr["IEC Parameter Name"] = "Data" + i.ToString();
            dr["Modbus Address"] = "Data" + i.ToString();
            dr["Variable Type"] = "Data" + i.ToString();
            dr["Variable Description"] = "Data" + i.ToString();
            dt.Rows.Add(dr);
            dataGridView1.DataSource = dt;
        }






        private void Form1_Load(object sender, EventArgs e)
        {

            dt.Columns.Add("IEC Parameter Name");
            dt.Columns.Add("Modbus Address");
            dt.Columns.Add("Variable Type");
            dt.Columns.Add("Variable Description");


        }
    }
}