c# - C#错误，正在执行存储过程，存储过程不可用

我有个问题，我的MySQL数据库中有一个名为：sp_insertSupplier的存储过程。此方法在mysql数据库中执行时有效。
我在Save按钮中做了这个语法

private void btn_supplier_save_Click(object sender, EventArgs e)
{
    string connections = Connection.mysqlconnectionbuilder();
    using (MySqlConnection conn = new MySqlConnection(connections))
    {
        using (MySqlCommand cmd = new MySqlCommand())
        {
            //make connection
            cmd.Connection = conn;
            cmd.CommandType = CommandType.StoredProcedure;
            cmd.CommandText = "call sp_insertSupplier(@KD,@NM,@AL,@EM,@TLP);";
            cmd.Parameters.AddWithValue("@KD", createCode());
            cmd.Parameters.AddWithValue("@NM", txtsuppliernama.Text);
            cmd.Parameters.AddWithValue("@AL", txtsupplieralamat.Text);
            cmd.Parameters.AddWithValue("@EM", txtsupplieremail.Text);
            cmd.Parameters.AddWithValue("@TLP",txtsuppliernotelp.Text);
            try
            {
                conn.Open();
                int result = cmd.ExecuteNonQuery();
                //check the result status
                if (result.Equals(1))
                {
                    DialogResult results = MessageBox.Show("Data berhasil ditambahkan! \n Apakah anda ingin input data lainnya? ", "Sukses!", MessageBoxButtons.OKCancel);
                    //cek apabila ingin menambahkan data lagi.
                    if (results.Equals(DialogResult.OK))
                    {
                        reset();
                    }
                    else if (results.Equals(DialogResult.Cancel))
                    {
                        this.Close();
                    }
                }
            } //end TRY
            catch (Exception exe)
                {
                    MessageBox.Show("Terjadi Kesalahan", "Perhatian!", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    StreamWriter _writer = new StreamWriter("E899911823.log");
                    _writer.WriteLine(exe.ToString());
                    Console.WriteLine(exe.ToString());
                } //END CATCH
            finally
                {
                    conn.Clone();
                } //END FINALLY
        }
    }
}

但是，当我执行语法时，它会显示一个错误：

MySql.Data.MySqlClient.MySqlException (0x80004005): Procedure or function '`call sp_insertSupplier(@KD,@NM,@AL,@EM,@TLP)`' cannot be found in database XXXXX

我认为连接管理器或创建@KD的随机方法没有任何问题。
我还有同样的问题，控制台显示：

MySql.Data.MySqlClient.MySqlException (0x80004005): Procedure or function '`call sp_insertSupplier`' cannot be found in database '`XXXXX`'.
at MySql.Data.MySqlClient.ProcedureCache.GetProcData(MySqlConnection connection, String spName)
at MySql.Data.MySqlClient.ProcedureCache.AddNew(MySqlConnection connection, String spName)
at MySql.Data.MySqlClient.ProcedureCache.GetProcedure(MySqlConnection conn, String spName, String cacheKey)
at MySql.Data.MySqlClient.StoredProcedure.GetParameters(String procName, DataTable& proceduresTable, DataTable& parametersTable)
at MySql.Data.MySqlClient.StoredProcedure.CheckParameters(String spName)
at MySql.Data.MySqlClient.StoredProcedure.Resolve(Boolean preparing)
at MySql.Data.MySqlClient.MySqlCommand.ExecuteReader(CommandBehavior behavior)
at MySql.Data.MySqlClient.MySqlCommand.ExecuteNonQuery()
at SerbaManisInventory.SupplierAdd.btn_supplier_save_Click(Object sender, EventArgs e)

我只是重写代码，这样代码：

using (MySqlCommand cmd = new MySqlCommand())
{
    cmd.Connection = conn;
    cmd.CommandType = CommandType.StoredProcedure;
    cmd.CommandText = "call sp_insertSupplier";
    cmd.Parameters.AddWithValue("@KD", createCode());
    cmd.Parameters.AddWithValue("@NM", txtsuppliernama.Text);
    cmd.Parameters.AddWithValue("@AL", txtsupplieralamat.Text);
    cmd.Parameters.AddWithValue("@EM", txtsupplieremail.Text);
    cmd.Parameters.AddWithValue("@TLP",txtsuppliernotelp.Text);
    try
        {
            ...

最佳答案

cmd.CommandType = CommandType.StoredProcedure;
cmd.CommandText = "call sp_insertSupplier(@KD,@NM,@AL,@EM,@TLP);";

如果CommandType是一个StoredProcedure，则无需全部编写。写下：

cmd.CommandText = "sp_insertSupplier";

像你一样提供参数。
确实没有名为call sp_insertSupplier(@KD,@NM,@AL,@EM,@TLP);的过程/函数