C Sharp :: Calculate The Total And Compare All Row In Datagridview?

I have a window form with datagridview,textbox,button and listbox. In datagridview i have added a column. In first row i have given the value like 7000,

second row 2500,
third row 7000,
fourth row 1000,
fifth 1300,
sixth 9000....n number of row:

if i enter 12000 in textbox1 then it will calculate the total in particular rows in datagridview.And the total should be less than 12000 what we have entered the value in textbox1.

The result will display in listbox..

like first greater value is 9000+2500=11500 ,
second greater value 7000+1000+1300=9500,
other third greater value is 7,000.

So i have given a sample code where i cannot get the solution ..

  double search;
            search = double.Parse(textBox1.Text);
            double sum = 0;
            for (int i = 0; i < dataGridView1.Rows.Count - 1; i++) {
                double se2 = Convert.ToDouble(dataGridView1.Rows[i].Cells[0].Value.ToString());
                if (se2 == search) {

[code]....