how to add data dynamically to DataGridview?

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I want to add data dynamically to DataGridView and I write this code.

C#

private void btnsubmit_Click(object sender, EventArgs e)
        {
            DataTable table = new DataTable();
            table.Columns.Add("pname".ToString());
            table.Columns.Add("pprice".ToString());
            table.Columns.Add("pq".ToString());
            DataRow dr = table.NewRow();
            dr["pname"] = cmbpname.Text;
            dr["pprice"] = txtpprice.Text;
            dr["pq"] = txtpqu.Text;

            table.Rows.Add(dr);
            var bindingSource = new BindingSource();
            bindingSource.DataSource = table;
            dataGridView1.DataSource = bindingSource;
            bindingSource.ResetBindings(true);
                    
        }

But whenever I click on submit button previous value get removed and new value inserted but I want to enter all value without losing previous value. Suggest some solution to solve my problem thanks :)

Posted 26-Feb-14 20:27pm

varuncodee

Updated 26-Feb-14 20:41pm

dan!sh

v2

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3 solutions

Solution 1

On each button click, you are creating a new DataTable to bind it to the DataGridView. Instead, check if a datasource already exists for the grid and if yes, add a new row to it.

Posted 26-Feb-14 20:40pm

dan!sh

Solution 3

You have to add new row to the existing datatable, not creating new one at every add new row, check this out:
Adding-Dynamic-Rows-in-ASP.Net-GridView-Control-with-TextBoxes.aspx[^]

Posted 26-Feb-14 20:54pm

Peter Leow

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Animesh Datta · Accepted Answer · 2014-02-26T20:44:00

Solution 2

Hello ,

The problem occurs because for every button click , a newly DataTable creates and hence all the previous data removes permanently . I suggest you to declare and define the DataTable outside of submitbutton_click event . and make the DataTable as static .

thanks
animesh

Posted 26-Feb-14 20:44pm

Animesh Datta

Updated 26-Feb-14 20:58pm

v2

Comments

varuncodee 27-Feb-14 3:08am

thank you sir,
could you please give me a example?

Animesh Datta 27-Feb-14 3:29am

first declare the DataTable globally like this
static DataTable dt=new DataTable();

next define its columns in Form_Load
dt.Columns.Add("pname");
dt.Columns.Add("pprice");

now add row in button_click

DataRow dr = dt.NewRow();
dr["pname"] = cmbpname.Text;
dr["pprice"] = txtpprice.Text;
dt.Rows.Add(dr);
Datagridview1.DataSource=dt;

thanks