DataSet dt= SqlHelper.ExecuteDataset(SqlHelper.conn(), CommandType.Text, "SELECT id,fcode,fname,faddress,fpersons,fphone,fisbool FROM t_store").ToString();
SqlHelper.ExecuteDataset返回的一个DataSet类型,请问下各位大虾,为什么这里获取的dt是空的,数据库有两条记录,
SqlHelper.ExecuteDataset返回的一个DataSet类型,请问下各位大虾,为什么这里获取的dt是空的,数据库有两条记录,
public static OleDbConnection Conn
{ get
{
try
{ string connstr = ""; if (conn == null)
conn = new OleDbConnection(connstr);
if (conn.State == ConnectionState.Closed)
conn.Open();
if (conn.State == ConnectionState.Broken)
{
conn.Close();
conn.Open();
}
return conn; }
catch (Exception ex)
{ throw;
}
}
}
//查询:DataTable
public static DataTable GetTable(string SqlStr)
{
try
{
OleDbDataAdapter dap = new OleDbDataAdapter(SqlStr, Conn);
DataSet ds = new DataSet();
dap.Fill(ds);
conn.Close();
return ds.Tables[0];
}
catch (Exception ex)
{ throw;
}
}
win7如下win7中Spy++才发现开始菜单就是窗口
class Program
{
// 获得窗体句柄
[DllImport("user32.dll")]
public static extern IntPtr FindWindow(String className, String captionName);
[DllImport("user32.dll")]
public static extern bool ShowWindow(IntPtr hwnd, uint nCmdShow);
static void Main(string[] args)
{
// 获得任务栏句柄
var rwl = FindWindow("Shell_TrayWnd", null);
//当nCmdShow=0:隐藏;=1:显示
ShowWindow(rwl, 0);
var rwl2 = FindWindow("Button", null);
ShowWindow(rwl2, 0);
Console.Read();
ShowWindow(rwl2, 1);
ShowWindow(rwl, 1);
}
}