C#想针对datagridview所查出来行数，求个合计,请问代码怎么写呢;

Question

请教个问题，我想针对datagridview所查出来行数，求个合计，合计数显示在下面文本框--合计数量里面，我所写得语句如下 ，运行有报错，敬请指导，谢谢；

 if (this.comboBox1.SelectedIndex == 0)//comboBox1下拉框选择笫一项
            {
                conn = new SqlConnection("server=.;database=focus_wohua;user=sa;password=whyy"); ;
                SqlCommand cmd = new SqlCommand("SELECT * FROM dbo.cx_cxinputm WHERE  cyear like '%" + textBox2.Text + "%'  AND cmonth like '%" + textBox3.Text + "%'  AND ISNULL(biszf,'') != '是' ", conn);
                //数据适配器
                SqlDataAdapter sda = new SqlDataAdapter();
                sda.SelectCommand = cmd;
                //DataTable存储数据
                DataTable dt = new DataTable();
                sda.Fill(dt);
                dataGridView1.DataSource = dt;

                int count = dataGridView1.RowCount;
                int text = 0;
                for (int i = 0; i < count; i++)
                {
                    int value = Convert.ToInt32( dt.Rows[0]["Value"]); ;

                   if (!string.IsNull Or Empty(value))
                    {
                        text += Convert.ToInt32(value);
                    }
                }
                textBox1.Text = text.ToString();
            }

Answer 1

你这里的空格那里来的？