134 lines
4.1 KiB
C#
134 lines
4.1 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Web;
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using System.Web.UI;
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using System.Web.UI.WebControls;
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using System.Data;
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using System.Text;
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using System.IO;
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using AspNet = System.Web.UI.WebControls;
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namespace FineUI.Examples.data
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{
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public partial class grid_excel : PageBase
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{
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protected void Page_Load(object sender, EventArgs e)
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{
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if (!IsPostBack)
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{
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BindGrid();
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}
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}
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#region BindGrid
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private void BindGrid()
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{
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DataTable table = DataSourceUtil.GetDataTable();
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Grid1.DataSource = table;
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Grid1.DataBind();
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}
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#endregion
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#region Events
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protected void Button1_Click(object sender, EventArgs e)
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{
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Response.ClearContent();
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Response.AddHeader("content-disposition", "attachment; filename=myexcel.xls");
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Response.ContentType = "application/excel";
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Response.ContentEncoding = System.Text.Encoding.UTF8;
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Response.Write(GetGridTableHtml(Grid1));
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Response.End();
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}
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private string GetGridTableHtml(Grid grid)
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{
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StringBuilder sb = new StringBuilder();
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sb.Append("<meta http-equiv=\"content-type\" content=\"application/excel; charset=UTF-8\"/>");
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sb.Append("<table cellspacing=\"0\" rules=\"all\" border=\"1\" style=\"border-collapse:collapse;\">");
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sb.Append("<tr>");
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foreach (GridColumn column in grid.Columns)
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{
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sb.AppendFormat("<td>{0}</td>", column.HeaderText);
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}
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sb.Append("</tr>");
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foreach (GridRow row in grid.Rows)
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{
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sb.Append("<tr>");
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foreach (object value in row.Values)
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{
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string html = value.ToString();
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if (html.StartsWith(Grid.TEMPLATE_PLACEHOLDER_PREFIX))
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{
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// 模板列
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string templateID = html.Substring(Grid.TEMPLATE_PLACEHOLDER_PREFIX.Length);
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Control templateCtrl = row.FindControl(templateID);
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html = GetRenderedHtmlSource(templateCtrl);
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}
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else
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{
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// 处理CheckBox
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if (html.Contains("f-grid-static-checkbox"))
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{
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if (html.Contains("uncheck"))
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{
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html = "×";
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}
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else
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{
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html = "√";
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}
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}
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// 处理图片
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if (html.Contains("<img"))
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{
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string prefix = Request.Url.AbsoluteUri.Replace(Request.Url.AbsolutePath, "");
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html = html.Replace("src=\"", "src=\"" + prefix);
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}
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}
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sb.AppendFormat("<td>{0}</td>", html);
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}
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sb.Append("</tr>");
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}
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sb.Append("</table>");
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return sb.ToString();
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}
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/// <summary>
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/// 获取控件渲染后的HTML源代码
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/// </summary>
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/// <param name="ctrl"></param>
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/// <returns></returns>
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private string GetRenderedHtmlSource(Control ctrl)
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{
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if (ctrl != null)
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{
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using (StringWriter sw = new StringWriter())
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{
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using (HtmlTextWriter htw = new HtmlTextWriter(sw))
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{
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ctrl.RenderControl(htw);
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return sw.ToString();
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}
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}
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}
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return String.Empty;
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}
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#endregion
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}
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}
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