[英]how to pass Sql parameter
此錯誤將出現在我的代碼中,過程或函數'gridalldata'期望沒有提供的參數'@order_no'。 我正在向以下過程發送參數
try
{
con.Open();
SqlCommand cmd = new SqlCommand("gridalldata", con);
cmd.Parameters.Add("@order_no", SqlDbType.NVarChar).Value = txt_orderno.Text;
SqlDataReader dr = cmd.ExecuteReader();
for (int i = 0; i < dataGridView1.Rows.Count; i++)
{
if (dr.HasRows)
{
dr.Read();
dataGridView1.Rows[i].Cells[0].Value = dr[0].ToString();
dataGridView1.Rows[i].Cells[2].Value = dr[2].ToString();
dataGridView1.Rows[i].Cells[3].Value = dr[3].ToString();
dataGridView1.Rows[i].Cells[4].Value = dr[4].ToString();
dataGridView1.Rows[i].Cells[5].Value = dr[5].ToString();
dataGridView1.Rows[i].Cells[6].Value = dr[6].ToString();
dataGridView1.Rows[i].Cells[7].Value = dr[7].ToString();
dataGridView1.Rows[i].Cells[8].Value = dr[8].ToString();
dataGridView1.Rows[i].Cells[9].Value = dr[9].ToString();
dataGridView1.Rows[i].Cells[10].Value = dr[13].ToString();
dataGridView1.Rows[i].Cells[11].Value = dr[12].ToString();
}
}
dr.Close();
con.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
con.Close();
}
如何解決這個問題
使用cmd.CommandType = CommandType.StoredProcedure;
執行存儲過程。
嘗試這個:
Try
{
con.Open();
string order= txt_orderno.Text;
SqlCommand cmd = new SqlCommand("gridalldata", con);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.AddWithValue("@order_no", SqlDbType.NVarChar).Value=order;
SqlDataReader dr = cmd.ExecuteReader();
for (int i = 0; i < dataGridView1.Rows.Count; i++)
{
if (dr.HasRows)
{
dr.Read();
dataGridView1.Rows[i].Cells[0].Value = dr[0].ToString();
dataGridView1.Rows[i].Cells[2].Value = dr[2].ToString();
dataGridView1.Rows[i].Cells[3].Value = dr[3].ToString();
dataGridView1.Rows[i].Cells[4].Value = dr[4].ToString();
dataGridView1.Rows[i].Cells[5].Value = dr[5].ToString();
dataGridView1.Rows[i].Cells[6].Value = dr[6].ToString();
dataGridView1.Rows[i].Cells[7].Value = dr[7].ToString();
dataGridView1.Rows[i].Cells[8].Value = dr[8].ToString();
dataGridView1.Rows[i].Cells[9].Value = dr[9].ToString();
dataGridView1.Rows[i].Cells[10].Value = dr[13].ToString();
dataGridView1.Rows[i].Cells[11].Value = dr[12].ToString();
}
}
dr.Close();
con.Close();
}
using (SqlConnection connection = new SqlConnection(connectionString))
{
connection.Open();
String orderNo=txt_orderno.Text;
// Am assuming gridalldata is your SP
SqlCommand cmd= new SqlCommand(gridalldata, connection);
cmd.CommandType=CommandType.StoredProcedure;
cmd.Parameters.AddWithValue("@order_no", orderNo);
SqlDataReader reader = command.ExecuteReader();
while (reader.Read())
{
// Code
}
}
using
語句確保使用后關閉連接
您還應該這樣綁定您的Datagridview
Public DataTable FillDataGrid(string orderID)
{
SqlCommand cmd = new SqlCommand("gridalldata", conn);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.AddWithValue("@order_no", orderNo);
SqlDataAdapter dap = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
dap.Fill(ds);
return ds.Tables[0];
}
Datatable dt=FillDataGrid(txt_orderno.Text);
DataGridVIew1.DataSource=dt;
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.