将gridview转换为图像

我想将gridview转换为图像并将其保存到asp.net 3.5中的localdisk。我不知道该怎么做。

任何人都可以请一些建议。

提前致谢。

Answer 1

以下链接可以帮助您：

将DataGridView转换为位图

使用Reporting Services报告生成将CodeGridView导出到Excel / PDF /图像文件 – CodeProject

Answer 2

为什么你想把它转换成图像，我不确定。 如果gridview具有分页function，则必须捕获每个页面。 更好的方法是将其导出为Excel或类似的东西。 这是执行此操作的代码：

using System; using System.Data; using System.Configuration; using System.IO; 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; public class GridViewExportUtil { /// 
 /// /// 
 ///  ///  public static void Export(string fileName, GridView gv) { HttpContext.Current.Response.Clear(); HttpContext.Current.Response.AddHeader( "content-disposition", string.Format("attachment; filename={0}", fileName)); HttpContext.Current.Response.ContentType = "application/ms-excel"; using (StringWriter sw = new StringWriter()) { using (HtmlTextWriter htw = new HtmlTextWriter(sw)) { // Create a table to contain the grid Table table = new Table(); // include the gridline settings table.GridLines = gv.GridLines; // add the header row to the table if (gv.HeaderRow != null) { GridViewExportUtil.PrepareControlForExport(gv.HeaderRow); table.Rows.Add(gv.HeaderRow); } // add each of the data rows to the table foreach (GridViewRow row in gv.Rows) { GridViewExportUtil.PrepareControlForExport(row); table.Rows.Add(row); } // add the footer row to the table if (gv.FooterRow != null) { GridViewExportUtil.PrepareControlForExport(gv.FooterRow); table.Rows.Add(gv.FooterRow); } // render the table into the htmlwriter table.RenderControl(htw); // render the htmlwriter into the response HttpContext.Current.Response.Write(sw.ToString()); HttpContext.Current.Response.End(); } } } /// 
 /// Replace any of the contained controls with literals /// 
 ///  private static void PrepareControlForExport(Control control) { for (int i = 0; i < control.Controls.Count; i++) { Control current = control.Controls[i]; if (current is LinkButton) { control.Controls.Remove(current); control.Controls.AddAt(i, new LiteralControl((current as LinkButton).Text)); } else if (current is ImageButton) { control.Controls.Remove(current); control.Controls.AddAt(i, new LiteralControl((current as ImageButton).AlternateText)); } else if (current is HyperLink) { control.Controls.Remove(current); control.Controls.AddAt(i, new LiteralControl((current as HyperLink).Text)); } else if (current is DropDownList) { control.Controls.Remove(current); control.Controls.AddAt(i, new LiteralControl((current as DropDownList).SelectedItem.Text)); } else if (current is CheckBox) { control.Controls.Remove(current); control.Controls.AddAt(i, new LiteralControl((current as CheckBox).Checked ? "True" : "False")); } if (current.HasControls()) { GridViewExportUtil.PrepareControlForExport(current); } } } } 

只需使用XLS文件和GridView的名称调用静态Export方法：

 GridViewExportUtil.Export("MyFile.XLS", myGridView); 

Answer 3

您可以使用Java applet。 检查以下url：

有没有办法使用java截取屏幕截图并将其保存为某种图像？