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  • c# sql连接数据库

    using System.Data.SqlClient;

    private static string connectionString ="Data Source=.\HS;Initial Catalog=sqltable;User ID=sa;pwd=0";

    private SqlConnection ConnectionOpen()
    {
    SqlConnection conn = new SqlConnection(connectionString);
    conn.Open();
    return conn;
    }
    /// <summary>
    /// 向表(Table)中插入一条数据
    /// </summary>
    public void Insert(int yid,string examtitle,int kemuD,int kemuX,int sort)
    {

    SqlConnection conn = ConnectionOpen();
    //string sql =
    // "insert into Table(row1, row2, row3, DateTime) values ('" +
    // value1 + "', '" + value2 + "', '" + value3 + "', '" + dateTime + "')";
    //SqlCommand comm = new SqlCommand(sql, conn);
    //comm.ExecuteReader();
    //conn.Close();

    //另一种方法
    string sqlStr = @"Insert Into tablename(webtype,type1,examtype,ceshitype,vip,adduid,examtitle,kemuD,kemuX,sort) Values(1,31,5,0,1,1,'"+examtitle+"',"+kemuD+","+kemuX+","+sort+")";
    sqlStr += ";Select @@identity";
    SqlCommand cmd = new SqlCommand();
    cmd.Connection = conn;
    cmd.CommandText = sqlStr;
    // cmd.ExecuteReader();
    int xid = Convert.ToInt32(cmd.ExecuteScalar());
    string sqlStr1 = @"update tablenameset zxksid="+xid+" where zxksid="+yid+"";
    SqlCommand cmd1 = new SqlCommand(sqlStr1, conn);
    cmd1.ExecuteNonQuery();
    conn.Close();
    }

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  • 原文地址:https://www.cnblogs.com/yzwdli/p/3895790.html
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