Question

以下是将DataTable对象渲染到Excel中的My Code Snippet。但是，当我点击ExporttoExcel按钮时，我无法将数据导入excel，而是在我的Excel工作表中获取所有页面控件。任何帮助真的很需要。谢谢你。

<asp:Button ID="btnExport" runat="server" Text="ExporttoExcel" OnClick="ExporttoExcel"/>

protected void ExporttoExcel(object sender, EventArgs args)
{
    DataTable dt=GetValues();
    Response.Clear();
    Response.ClearContent();
    Response.Buffer = true;
    Response.AddHeader("content-disposition", "attachment;filename=Data.xls");
    Response.ContentType = "application/vnd.ms-excel";
    Response.Charset = "utf-8";
    string tab = "";
    foreach (DataColumn column in dt.Columns)
    {
        Response.Write("<b>");
        Response.Write(tab + column.ColumnName.ToString());
        Response.Write("</b>");
        tab = "\t";
    }
    Response.Write("\n");
    int i;
    foreach (DataRow row in dt.Rows)
    {
        tab = "";
        for (i = 0; i < dt.Columns.Count; i++)
        {
            Response.Write(tab + row[i].ToString());
            tab = "\t";
        }
        Response.Write("\n");
    }

    Response.Flush();
}

public DataTable GetValues()
{
    DataTable table = new DataTable();
    table.Columns.Add("Dosage", typeof(int));
    table.Columns.Add("Drug", typeof(string));
    table.Columns.Add("Patient", typeof(string));
    table.Columns.Add("Date", typeof(DateTime));

    // Here we add five DataRows.
    table.Rows.Add(25, "Indocin", "David", DateTime.Now);
    table.Rows.Add(50, "Enebrel", "Sam", DateTime.Now);
    table.Rows.Add(10, "Hydralazine", "Christoff", DateTime.Now);
    table.Rows.Add(21, "Combivent", "Janet", DateTime.Now);
    table.Rows.Add(100, "Dilantin", "Melanie", DateTime.Now);
    return table;    
}

Answer 1

我用来创建excel文件的方法是使用gridview控件。在gridview控件的帮助下，您可以轻松创建Excel文件。在下面的代码中，我使用gridview的数据填充datatable并使用RenderControl方法生成HTML，然后将其保存到扩展名为.xls的文件

protected void ExporttoExcel(object sender, EventArgs args)
{
    DataTable dt = GetValues();        
    var grid = new System.Web.UI.WebControls.GridView();
    grid.ShowHeaderWhenEmpty = true;        
    grid.DataSource = dt;


    grid.DataBind();
    Response.ClearContent();
    Response.AddHeader("content-disposition", "attachment; filename=Data.xls");
    Response.ContentType = "application/excel";
    StringWriter sw = new StringWriter();
    System.Web.UI.HtmlTextWriter htw = new System.Web.UI.HtmlTextWriter(sw);
    grid.RenderControl(htw);
    Response.Write(sw.ToString());
    Response.End();               
}

Answer 2

我使用了以下代码，它对我有用。您必须与我们分享您的GetValue功能定义，以便我们为您提供帮助。

<asp:Button ID="btnExport" runat="server" Text="ExporttoExcel"/>

protected void    ExporttoExcel(object sender EventArgs args)
{
    dtCity = city.GetAllCity();//your datatable
    string attachment = "attachment; filename=city.xls";
    Response.ClearContent();
    Response.AddHeader("content-disposition", attachment);
    Response.ContentType = "application/vnd.ms-excel";
    string tab = "";
    foreach (DataColumn dc in dt.Columns)
    {
        Response.Write(tab + dc.ColumnName);
        tab = "\t";
    }
    Response.Write("\n");
    int i;
    foreach (DataRow dr in dt.Rows)
    {
        tab = "";
        for (i = 0; i < dt.Columns.Count; i++)
        {
            Response.Write(tab + dr[i].ToString());
            tab = "\t";
        }
        Response.Write("\n");
    }
    Response.End();
}

在asp.net

2 个答案: