how to replace image instead of values in grid view cell

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C#

ASP.NET

Hi all,
I implemented vertical grid view with binding data.Here my requirement is read the grid view values based on that values i need to replace the images instead of values.
Here i can able to read the values but how can i pass images instead of values.

for example if the value is 0 i need to put one image,if the value is -ve i need to put the another image




protected void BindScoreData()
{
string DataId = Request.QueryString["q"];
DataTable Score = new DataTable();
SqlConnection conn = new SqlConnection(connString);
conn.Open();
SqlCommand cmd = new SqlCommand("PROC_DO_Score_Analysis", conn);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add("@DO_Ticker", SqlDbType.VarChar, 50).Value = DataId;
//SqlDataReader reader = cmd.ExecuteReader();
SqlDataAdapter da = new SqlDataAdapter(cmd);
da.Fill(Score);
Score.Columns[1].ColumnName = "CompanyName";
Score.Columns[2].ColumnName = "Sector";
Score.Columns[3].ColumnName= "SubSector";
Score.Columns[4].ColumnName = "FilingProbablility";
Score.Columns[5].ColumnName = "settlementProbablility";
GridView1.DataSource = Score;
//gridScore.DataBind();
GridView1.DataSource = ConvertColumnsAsRows(Score);
GridView1.DataBind();
//GridView1.HeaderRow.Visible = false;
GridView1.HeaderRow.Visible = false;
foreach (GridViewRow row in gridScore.Rows)
{
System.Web.UI.WebControls.Image img = (System.Web.UI.WebControls.Image)e.Row.FindControl("image1");
//String header = gridScore.Columns[i].HeaderText;
string h = row.Cells[0].Text;
//String cellText = row.Cells[i].Text;
string ss = row.Cells[1].Text;
if (ss == "0")
{
//img.ImageUrl = "resources/images/add.png";
//img.Visible = true;
}
else if (ss == "-ve")
{
}
else if (ss == "+ve")
{
}
else
{
}

}


how can i pass images highlighted above in that code.

any one please share any idea or related code to me.