在数据库中插入数据集记录

Question

我需要将数据集记录（C＃）插入MS Accessdatabase表。 我需要批量插入记录。

我怎么能在C＃中做到这一点

Answer 1

对于此类任务，请考虑使用数据适配器抽象。 使用Microsoft Access数据库，您可以使用OleDbDataAdapter实现，如下例所示：

// Prerequisite: The data to be inserted is available in a DataTable/DataSet.
var data = new DataTable();
data.Columns.Add("CompanyName", typeof(string));
data.Columns.Add("Phone", typeof(string));
data.Rows.Add("Foo", "12345678");
data.Rows.Add("Bar", "87654321");

// Now, open a database connection using the Microsoft.Jet.OLEDB provider.
// The "using" statement ensures that the connection is closed no matter what.
using (var connection = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data source=Northwind.mdb"))
{
    connection.Open();

    // Create an OleDbDataAdapter and provide it with an INSERT command.
    var adapter = new OleDbDataAdapter();
    adapter.InsertCommand = new OleDbCommand("INSERT INTO Shippers (CompanyName, Phone) VALUES (@CompanyName , @Phone)", connection);
    adapter.InsertCommand.Parameters.Add("CompanyName", OleDbType.VarChar, 40, "CompanyName");
    adapter.InsertCommand.Parameters.Add("Phone", OleDbType.VarChar, 24, "Phone");

    // Hit the big red button!
    adapter.Update(data);
}

您可以对其他品牌的数据库引擎执行相同操作，将OleDbCommand ， OleDbDataAdapter和OleDbConnection替换为您的数据库引擎的相应实现。 对于Microsoft SQL Server，查找以Sql为前缀的类，例如。 SqlCommand 。

Answer 2

   public void insert_dataset(DataSet ds,string ret_table, string table, string fileds, ArrayList arr_data)
    {
        ArrayList arr_rec=new ArrayList();

        string[] str_fields = fileds.Split(',');

        for (int i=0;i<ds.Tables[ret_table].Rows.Count;i++)
        {
            for (int j = 0; j < str_fields.Length; j++)
            {
                arr_rec.Add(ds.Tables[ret_table].Rows[i].ItemArray[j]);
            }

            insert_table(table, fileds, arr_rec);

            arr_rec.Clear();
        }


    }
    public void insert_table(string table,string fileds,ArrayList arr_data)
    {
        string str_command, str_params;

        string[] str_fields = fileds.Split(',');

        for (int i = 0; i < str_fields.Length; i++)
        {
            str_fields[i] = "@" + str_fields[i].Trim();
        }

        str_params = string.Join(",", str_fields);

        str_command = "INSERT INTO " + table + "(" + fileds + ") values(" + str_params + ")";

        con = new OleDbConnection();
        //for sql
        //con=new SqlConnection();

        con.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + frm_main.cur_directory + "\\db_temp1.mdb;Persist Security Info=True";
        //for sql
        //con.ConnectionString="server=(local);trusted_connection=yes;database=telephon;";

        cmd = con.CreateCommand();
        //for sql
        //cmd=new SqlCommand();
        cmd.Connection = con;

        con.Open();

        cmd.CommandText =str_command;

       // cmd.Parameters.AddWithValue("@ACagname", "2");
       for (int i = 0; i < arr_data.Count; i++)
        {
            cmd.Parameters.AddWithValue(str_fields[i],arr_data[i]);
        }

        cmd.ExecuteNonQuery();

        con.Close();

    }