C# 连接 Access 数据库

　c#连接Access 数据库需要System.Data, System.Data.OleDb

using System.Data
using System.Data.OleDb

public OleDbConnection getConn()
{
string connstr="Provider=Microsoft.Jet.OLEDB.4.0 ;Data Source=D:\\test\\distance.mdb";
OleDbConnection conn= new OleDbConnection(connstr);
return(conn);
}

建立数据表

 private void Createtable()
{
  OleDbConnection conn = null; ;
  try
  {
    conn = getConn();
    string strAccessCreatetables = "create table distance (ID int NOT NULL, PicName varchar(255) NOT NULL)";
    OleDbCommand myCommand = new OleDbCommand(strAccessCreatetables, conn);
    conn.Open();
   }
   catch (Exception ex)
   {
      MessageBox.Show("Error: Failed to create table.\n{0}", ex.Message);
    }
    finally
   {
      conn.Close();
   }
}

插入元素

private void AddNote(string picname)
{
  try
  {
    OleDbConnection conn = getConn();
    conn.Open();
    string insertstr = "insert into distance  values(1,'" + picname + "')";
    OleDbCommand insertcmd = new OleDbCommand(insertstr, conn);
    insertcmd.ExecuteNonQuery();
    conn.Close();
   }
   catch (Exception ex)
   {
    MessageBox.Show("Error: Failed to insert.\n{0}", ex.Message);
   }
 }

　　注意如果在window x64 或 anyCPU 下运行会出错提示： 未在本机计算机上注册“，改成x86 即可，或者x64 下使用ADOX,需加入两个引用Interop.ADODB, Interop.ADOX即可

  public static bool CreateMDBDataBase(string mdbPath)
  {
    try
    {
       ADOX.CatalogClass cat = new ADOX.CatalogClass();
       cat.Create("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + mdbPath + ";");
       cat = null;
       return true;
     }
    catch { return false; }
  }