遇到个问题,找了半天答案也没找到,请教高手,这个问题到底怎么解决啊? 谢谢。代码不多,我就都贴上来了啊!using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;namespace WindowsApplication1
{
public partial class DataView : Form
{
public DataView()
{
InitializeComponent();
} private void DataView_Load(object sender, EventArgs e)
{
DataTable dt = new DataTable();
dt.Columns.Add(new DataColumn("班级",typeof(string)));
dt.Columns.Add(new DataColumn("姓名",typeof(string)));
dt.Columns.Add(new DataColumn("学科",typeof(string)));
dt.Columns.Add(new DataColumn("成绩",typeof(int))); DataRow dr = dt.NewRow();
dr["班级"] = "一班";
dr["姓名"] = "赵伟";
dr["学科"] = "语文";
dr["成绩"] = 90; dt.Rows.Add(dr);
DataRow dr1 = dt.NewRow();
dr1["班级"] = "一班";
dr1["姓名"] = "叶君丽";
dr1["学科"] = "数学";
dr1["成绩"] = 99;
dt.Rows.Add(dr1); DataView dv = new DataView(dt);
foreach (DataRowView drv in dv)
{
for (int i = 0; i < dt.Columns.Count; i++)
{
richTextBox1.Text += drv[i].ToString();
}
}
}
}
}
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;namespace WindowsApplication1
{
public partial class DataView : Form
{
public DataView()
{
InitializeComponent();
} private void DataView_Load(object sender, EventArgs e)
{
DataTable dt = new DataTable();
dt.Columns.Add(new DataColumn("班级",typeof(string)));
dt.Columns.Add(new DataColumn("姓名",typeof(string)));
dt.Columns.Add(new DataColumn("学科",typeof(string)));
dt.Columns.Add(new DataColumn("成绩",typeof(int))); DataRow dr = dt.NewRow();
dr["班级"] = "一班";
dr["姓名"] = "赵伟";
dr["学科"] = "语文";
dr["成绩"] = 90; dt.Rows.Add(dr);
DataRow dr1 = dt.NewRow();
dr1["班级"] = "一班";
dr1["姓名"] = "叶君丽";
dr1["学科"] = "数学";
dr1["成绩"] = 99;
dt.Rows.Add(dr1); DataView dv = new DataView(dt);
foreach (DataRowView drv in dv)
{
for (int i = 0; i < dt.Columns.Count; i++)
{
richTextBox1.Text += drv[i].ToString();
}
}
}
}
}
DataView dv = new DataView(dt);
foreach (DataRowView drv in dv)
这两行,提示
“DataView”方法没有采用“1”个参数的重载
“WindowsApplication1.DataView”不包含“GetEnumerator”的公共定义,因此 foreach 语句不能作用于“WindowsApplication1.DataView”类型的变量
改用for()循环实现吧.
DataView dv = new DataView();
本来提示是没有参数的,可是网上很多方法都是这样写的,DataView dv = new DataView(DataTable);
但是我这里这样用就出错。可以参考:http://hi.baidu.com/libanggeng/blog/item/bc53563e29c97a12baa167a4.html
DataTable dt = new DataTable("dt")