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多列图文混合，二进制流方式写入及更新到数据库

图片与文字二进制写入数据库

```csharpstring connectionstring="*********";//SQL语句，获取一行数据。 //TOP 1表示1列，name price表示列名，string SQLstring="select top 1 name,price from TableName";using(SqlConnection connection=new SqlConnection(connectionstring)){ DataSet ds=new DataSet(); t.

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Data.OleDb;using System.Data;namespace 控制台读取表中数据练习{ class Program { static void Main(string[] args)

//获取连接数据库，连接字符串using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Data.SqlClient;namespace ConsoleApplication1{ class Program { static void Main(string[] args

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows.Forms;using System.Data.SqlClient;namespace 数.

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows.Forms;using System.IO;using System.Data.OleDb;.

这个程序中的LINQ 查询语句使用了LINQ 声明性查询语法：本例中就是声明并初始化names 数组：string[] names = { “Alonso”, “Zheng”, “Smith”, “Jones”, “Smythe”, “Small”,“Ruiz”, “Hsieh”, “Jorgenson”, “Ilyich”, “Singh”, “Samba”, “Fatimah” };var queryResults =from n in nameswhere n.StartsWith(“S”

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows.Forms;using System.IO;using System.Data.OleDb;.