请问C#中如何将数据集中的数据存为EXCEL文件?.xls,.dbf等格式的

Question

excel类， 直接向excel 文件中写

Answer 1

解决方案：
页面增加一个按钮，单击事件添加如下方法：
protected void Button1_Click(object sender, EventArgs e)
    {
        Export("application/ms-excel", "学生成绩报表.xls");
    }    private void Export(string FileType, string FileName)
    {
        Response.Charset = "GB2312";
        Response.ContentEncoding = System.Text.Encoding.UTF7;
        Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(FileName, Encoding.UTF8).ToString());
        Response.ContentType = FileType;
        this.EnableViewState = false;
        StringWriter tw = new StringWriter();
        HtmlTextWriter hw = new HtmlTextWriter(tw);
        GridView1.RenderControl(hw);
        Response.Write(tw.ToString());
        Response.End();
    }
//如果没有下面方法会报错类型“GridView”的控件“GridView1”必须放在具有 runat=server 的窗体标记内
    public override void VerifyRenderingInServerForm(Control control)
    {
    }
还有由于是文件操作所以要引入名称空间IO和Text后台代码：
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
using System.Drawing;
using System.IO;
using System.Text;
public partial class Default7 : System.Web.UI.Page
{
    SqlConnection sqlcon;
    SqlCommand sqlcom;
    string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa";
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            bind();        }
    }
    
    public void bind()
    {
        string sqlstr = "select top 5 * from 飞狐工作室";
        sqlcon = new SqlConnection(strCon);
        SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
        DataSet myds = new DataSet();
        sqlcon.Open();
        myda.Fill(myds, "飞狐工作室");
        GridView1.DataSource = myds;
        GridView1.DataKeyNames = new string[] { "身份证号码" };
        GridView1.DataBind();
        sqlcon.Close();
    }    protected void Button1_Click(object sender, EventArgs e)
    {
        Export("application/ms-excel", "学生成绩报表.xls");
    }    private void Export(string FileType, string FileName)
    {
        Response.Charset = "GB2312";
        Response.ContentEncoding = System.Text.Encoding.UTF7;
        Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(FileName, Encoding.UTF8).ToString());
        Response.ContentType = FileType;
        this.EnableViewState = false;
        StringWriter tw = new StringWriter();
        HtmlTextWriter hw = new HtmlTextWriter(tw);
        GridView1.RenderControl(hw);
        Response.Write(tw.ToString());
        Response.End();
    }
    public override void VerifyRenderingInServerForm(Control control)
    {
    }
    
}前台：
<asp:GridView ID="GridView1" runat="server"    AutoGenerateColumns="False" CellPadding="3"  
                         BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px"   >
                        <FooterStyle BackColor="White" ForeColor="#000066" />
                        <Columns>
                            <asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" />
                            <asp:BoundField DataField="姓名" HeaderText="姓名"  />
                            <asp:BoundField DataField="出生日期" HeaderText="邮政编码"  />
                            <asp:BoundField DataField="家庭住址" HeaderText="家庭住址"  />
                            <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" />
                            <asp:BoundField DataField="起薪" HeaderText="起薪"  />
                           
                        </Columns>
                        <RowStyle ForeColor="#000066" />
                        <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
                        <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left"  CssClass="ms-formlabel DataGridFixedHeader"/>
                        <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
                    </asp:GridView>
        <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="导出" />

Answer 2

我只想在.net环境中点击按钮然后出来个保存对话框,然后输入要保存的文件名,确定即可
具体后台代码怎么写?谢谢

Answer 3

楼上的是在web下的代码
win下的代码可以参考如下网址:
http://www.it130.net/Csharp/WinForm-dataGridView-Excel-2176.htm

Answer 4

           try
            {
                Microsoft.Office.Interop.Excel.Application myExcel = new Microsoft.Office.Interop.Excel.Application();//创建Excel表
                myExcel.Visible = true;
                Microsoft.Office.Interop.Excel.Workbooks myWorkbooks = myExcel.Workbooks;//创建Excel工作表
                Microsoft.Office.Interop.Excel.Workbook myWorkbook = myWorkbooks.Add(System.Reflection.Missing.Value); //创建Excel工作表
                Microsoft.Office.Interop.Excel.Worksheet myWorksheet = (Microsoft.Office.Interop.Excel.Worksheet)myWorkbook.Worksheets[1];//创建Excel工作表Sheet1页
                Microsoft.Office.Interop.Excel.Range myrange = myWorksheet.get_Range("A1", "D1");//选择页的范围，从“A1”开始，我这是四列所以到“D1”                object[] myhead = { "日期", "组名", "付款人", "金额" };//设置表头
                myrange.Value2 = myhead;//表头的值传入Excel表                if (dgvRecord.Rows.Count > 0)
                {
                    myrange = myWorksheet.get_Range("A2", System.Reflection.Missing.Value);
                    int row = 0;
                    row = dgvRecord.Rows.Count;//设置表的行数
                    int col = 4;//设置表的列数
                    object[,] mydata = new object[row, col];
                    for (int i = 0; i < row; i++)//循环读取DataGridView上的数据
                    {
                        for (int j = 0; j < col; j++)
                        {
                            mydata[i, j] = dgvRecord[j, i].Value.ToString();//读取DataGridView上的值保存到mydata数组中，这里要注意哦，DataGridView是列在前，而Excel刚好相反
                        }
                    }
                    myrange = myrange.get_Resize(row, col);
                    myrange.Value2 = mydata;//把madata数组的值存到Excel表导出
                    myrange.EntireColumn.AutoFit();
                }
                myExcel = null;//清空表单
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }