checkbox checked in gridview when loaded

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C#

i want to checkbox checked in gridview when gridview is loaded.
there is value true and false stored in database.


i use the function for check the user and bit value but it true for all other. it can not true for specific user and his row.

code is:

protected bool subProgram(string str)
    {
        int i=1;
        string s11 = "Select bit_indicator,category,subctgry from document_rights where user_id='" + drop_user.SelectedItem.Value + "' and bit_indicator='" + i + "' and category='"+drop_cat.SelectedItem.Value+"' and sub_cat='"+drop_sub_cat.SelectedItem.Value+"'";
        SqlDataAdapter ad2 = new SqlDataAdapter(s11, c.getcon());
        DataSet ds2 = new DataSet();
        ad2.Fill(ds2);
        if (ds2.Tables[0].Rows.Count != 0)
        {
            return true;
        }
        else
        {
            return false;
        }
    }

i wan to check only specific user... so what can i dooo now.....

so please help me..
Thanksssss ....