search value in grid view

If you Want Values from textbox which under the gridview
May this will help you.

Textbox tex= gridview1.findcontrol("your textbox name") as textbox;
string value=tex.text;

Here Is Fully Working Codes.
where gvDetail is name of Grid view. 
On Search Button Click Write The Codes. 

searchString = textBox1.Text.Trim(); 
if (searchString == string.Empty || searchString.Length < 8)
  {
     MessageBox.Show("Enter Valid Consumer Number..!");
  }
  else
   {
     foreach (DataGridViewRow row in gvDetail.Rows)
   {                              if(row.Cells["SERVICENO"].Value.ToString().Contains(searchString))
    {
      gvDetail.CurrentRow.Selected = false;
      gvDetail.Rows[row.Index].Selected = true;
      int index = row.Index;
      gvDetail.FirstDisplayedScrollingRowIndex = index;
      break;
    }
  }
}

in search button write this code i have used fluxgird for testing u can use datagridview

try
{
    FormatGrid();

    OleDbConnection con = new OleDbConnection(path);
    con.Open();
    //OleDbDataAdapter da = new OleDbDataAdapter("Select * from ItemMast where Icode like '" + txtICode.Text.Trim() + "%' order by Iname", con);
    OleDbDataAdapter da = new OleDbDataAdapter("Select * from ItemMast where IName like '" + txtICode.Text.Trim() + "%' order by IName", con);
    DataSet ds = new DataSet();
    da.Fill(ds, "ItemMast");
    DataTable dt = ds.Tables["ItemMast"];
    if (dt.Rows.Count > 0)
    {
        int i = 1;
        MSGrid1.Rows = dt.Rows.Count + 1;
        foreach (DataRow dr in dt.Rows)
        {
            MSGrid1.set_TextMatrix(i, 0, i.ToString());
            MSGrid1.set_TextMatrix(i, 1, dr["ICode"].ToString());
            MSGrid1.set_TextMatrix(i, 2, dr["IName"].ToString());
            MSGrid1.set_TextMatrix(i, 3, dr["SubSubGroupName"].ToString());
            MSGrid1.set_TextMatrix(i, 4, dr["GroupName"].ToString());
            MSGrid1.set_TextMatrix(i, 5, dr["SubGroupName"].ToString());
            //MSGrid1.set_TextMatrix(i, 4, dr["ICode"].ToString());
            //MSGrid1.set_TextMatrix(i, 3, dr["AvlQty"].ToString());

            double st1 = double.Parse(dr["AvlQty"].ToString());

            if (CheckDecimal(st1) == false)
                MSGrid1.set_TextMatrix(i, 6, st1.ToString("0"));
            else
                MSGrid1.set_TextMatrix(i, 6, st1.ToString());     

            i = i + 1;
        }
    }
    con.Close();
}
catch (Exception ex)
{
    MessageBox.Show(ex.Message);
}

Refer - [Solution 3] Different row color in Gridview[^]

Quote:

C#

foreach (GridViewRow gvrow in GridView1.Rows)
{
    if(gvrow.Cells["ID"].Value = 1)
    {
          gvrow.DefaultCellStyle.BackColor = Color.Red;
    }
    else
    {
          gvrow.DefaultCellStyle.BackColor = Color.Green;          
    }
}

Here it is checking ID value 1.

According to your requirements, you need to check the Customer ID like this and match that with the Searched ID (entered in the TextBox).

Also check - search for a value in a Datagridview[^]

This Code Works . :)
gvDetail is the name of Grid view.

searchString = textBox1.Text.Trim(); 
if (searchString == string.Empty || searchString.Length < 8)
  {
     MessageBox.Show("Enter Valid Consumer Number..!");
  }
  else
   {
     foreach (DataGridViewRow row in gvDetail.Rows)
   {                              if(row.Cells["SERVICENO"].Value.ToString().Contains(searchString))
    {
      gvDetail.CurrentRow.Selected = false;
      gvDetail.Rows[row.Index].Selected = true;
      int index = row.Index;
      gvDetail.FirstDisplayedScrollingRowIndex = index;
      break;
    }
  }
}

//Just improving the previous solution (Solution7)

string searchString = Textbox1.Text.Trim();

{
foreach (DataGridViewRow row in Gridview.Rows)
{
if (row.Cells[1].Value.ToString().ToLower() == searchString.ToLower() || row.Cells[1].Value.ToString().ToLower().Contains( searchString.ToLower()) )
{
Gridview.ClearSelection();
Gridview.CurrentRow.Selected = false;
Gridview.Rows[row.Index].Selected = true;
int index = row.Index;
Gridview.FirstDisplayedScrollingRowIndex = index;
break;
}
}
}