如何使用c#sql server向现有表添加新行

我需要写一个程序.程序的一部分是写入sql数据库(.mdf).
我在尝试向表中添加新行时遇到了很多麻烦(称为“数据”).这是代码：

...
DataSet ds = new DataSet();
System.Data.SqlClient.SqlDataAdapter da;
DataRow dRow;
string sql = "SELECT * From Data";
da = new System.Data.SqlClient.SqlDataAdapter(sql, con);
...
System.Data.SqlClient.SqlCommandBuilder cb;
cb = new System.Data.SqlClient.SqlCommandBuilder(da);
dRow = ds.Tables["Data"].NewRow();
dRow[0] = "my_data1";
dRow[1] = "my_data2";
dRow[2] = "my_data3";
...
ds.Tables["Data"].Rows.Add(dRow);
da.Update(ds, "Data");
...

我执行此代码,但数据没有保存到表中.有谁知道如何在表中输入新行并保存它？

解决方法:

您的SqlDataAdapter中需要一个InsertCommand.

编辑：

这是我掀起的一个简单例子.还有很多其他的,但这应该让你去.它假设您有一个包含两列的表(dbo.Foos)(Foo int,Bar nvarchar(50)).

namespace DataAdapterSample
{
    using System;
    using System.Data;
    using System.Data.SqlClient;

    class Program
    {
        static void Main(string[] args)
        {
            using (SqlConnection connection = new SqlConnection(@"Data Source=[your server];Initial Catalog=[your database];Integrated Security=true;"))
            {
                using (SqlDataAdapter dataAdapter = new SqlDataAdapter())
                {
                    dataAdapter.SelectCommand = new SqlCommand("select Foo, Bar from dbo.Foos", connection);
                    dataAdapter.InsertCommand = new SqlCommand("insert into dbo.Foos (Foo, Bar) values (@Foo, @Bar)", connection);
                    dataAdapter.InsertCommand.Parameters.Add(new SqlParameter("Foo", SqlDbType.Int, 4, "Foo"));
                    dataAdapter.InsertCommand.Parameters.Add(new SqlParameter("Bar", SqlDbType.NText, 50, "Bar"));

                    using (DataSet dataSet = new DataSet())
                    {
                        dataAdapter.Fill(dataSet);

                        Console.WriteLine("There are {0} rows in the table", dataSet.Tables[0].Rows.Count);

                        DataRow newRow = dataSet.Tables[0].NewRow();
                        newRow["Foo"] = 5;
                        newRow["Bar"] = "Hello World!";
                        dataSet.Tables[0].Rows.Add(newRow);

                        dataAdapter.Update(dataSet);
                    }                

                    //Just to prove we inserted
                    using (DataSet newDataSet = new DataSet())
                    {
                        dataAdapter.Fill(newDataSet);
                        Console.WriteLine("There are {0} rows in the table", newDataSet.Tables[0].Rows.Count);                
                    }                
                }
            }
            Console.ReadLine();        
        }
    }
}