用户控件出口的GridView为PDF [英] UserControl Export GridView to PDF
本文介绍了用户控件出口的GridView为PDF的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有一个的用户控件的，我想我的GridView表导出为PDF。我可以做一个CSV文件就好了，但试图做一个PDF时，我得到的错误。 （我用iTextSharp的库）这是我得到的错误：
控制型的GridView的DoNotAddList_1_GridView1'必须放在与RUNAT =服务器的表单标签内。
我有一个表格标记在我的HTML，我试图在ASCX文件中添加它但没有任何工程。我发现很多人得到这个错误，大多数人都建议增加这code到ascx.cs文件：
公共覆盖无效VerifyRenderingInServerForm（控制控制）{}
但是，这给了我这个错误的没有合适的方法来否定...
我不知道该怎么办。我一直没能找到解决的办法。请帮忙！！
使用系统;
使用System.Data这;
使用System.Configuration;
System.Collections中使用;
使用的System.Web;
使用System.Web.Security;
使用System.Web.UI程序;
使用System.Web.UI.WebControls;
使用System.Web.UI.WebControls.WebParts;
使用System.Web.UI.HtmlControls;
使用System.IO;
使用iTextSharp.text;
使用iTextSharp.text.pdf;
使用iTextSharp.text.html;
使用iTextSharp.text.html.simpleparser;公共部分类UserControls_DoNotAddListControl：System.Web.UI.UserControl
{
保护无效PDF_Click（对象发件人，EventArgs的发送）
{
Response.ContentType =应用程序/ PDF
Response.AddHeader（内容处置，
附件;文件名= GridViewExport.pdf）;
Response.Cache.SetCacheability（HttpCacheability.NoCache）;
StringWriter的SW =新的StringWriter（）;
HtmlTextWriter的HW =新的HtmlTextWriter（SW）;
GridView1.AllowPaging = FALSE;
GridView1.DataBind（）;
GridView1.RenderControl（HW）;
StringReader SR =新StringReader（sw.ToString（））;
文档pdfDoc =新的文档（PageSize.A4，10F，10F，10F，0F）;
HTMLWorker的HTMLParser =新HTMLWorker（pdfDoc）;
PdfWriter.GetInstance（pdfDoc，Response.OutputStream）;
pdfDoc.Open（）;
htmlparser.Parse（SR）;
pdfDoc.Close（）;
的Response.Write（pdfDoc）;
到Response.End（）;
}
保护无效CSV_Click（对象发件人，EventArgs的发送）
{
Response.ClearContent（）;
Response.AddHeader（内容处置的String.Format（附件;文件名= {0}，BloombergDaily.csv））;
Response.ContentType =应用程序/文本;
GridView1.AllowPaging = FALSE;
GridView1.DataBind（）;
StringBuilder的strbldr =新的StringBuilder（）;
的for（int i = 0; I＆LT; GridView1.Columns.Count;我++）
{
strbldr.Append（GridView1.Columns [I] .HeaderText +'，'）;
}
strbldr.Append（\\ n）;
对于（INT J = 0; J＆LT; GridView1.Rows.Count; J ++）
{
对于（INT K = 0; K＆LT; GridView1.Columns.Count; k ++）
{
strbldr.Append（GridView1.Rows [j]的.Cells [K]。文本+'，'）;
}
strbldr.Append（\\ n）;
}
的Response.Write（strbldr.ToString（））;
到Response.End（）;
}
}
下面就是我在aspx文件：
＆LT;表ID =form1的=服务器行动=/＆GT;
＆LT; DIV ID =donotadd级=tableWrapper＆GT;
＆LT; DIV ID =TABS1＆GT;
＆所述p为H.;
＆LT; DIV ID =标签-1＆GT;
＆LT; DIV ID =DoNotAddListMacro级=dataTable的table_Center＆GT;
＆LT;一把umbraco：宏ID =Macro1的别名=DoNotAddListControl=服务器＆GT;＆LT; /一把umbraco：宏＆GT;
＆LT; / DIV＆GT;
＆LT; / DIV＆GT;
＆所述; / P＆GT;
＆LT; / DIV＆GT;
＆LT; / DIV＆GT;
＆LT; /表及GT;
解决方案
下面是我找到了解决办法：
保护无效BtnPDF_Click（对象发件人，EventArgs的发送）
{
GridView控件GV =新的GridView（）;
gv.DataSource = SqlDataSource1;
gv.DataBind（）;
StringWriter的SW =新的StringWriter（）;
HtmlTextWriter的HTW =新的HtmlTextWriter（SW）; gv.RenderControl（HTW）; VAR纪念品=新的MemoryStream（）; 文档的文档=新的文件（PageSize.LETTER，50，50，50，50）;
PdfWriter.GetInstance（文件，MEM）; document.Open（）; iTextSharp.text.html.simpleparser.HTMLWorker HW =新iTextSharp.text.html.simpleparser.HTMLWorker（文件）;
hw.Parse（新StringReader（sw.ToString（）））;
document.Close（）; Response.ClearContent（）;
Response.ClearHeaders（）;
Response.ContentType =应用程序/ PDF
Response.AddHeader（内容处置，附件;文件名=+ DateTime.Now）; Response.BinaryWrite（mem.ToArray（））;
到Response.End（）;
Response.Flush（）;
Response.Clear（）;
}
I have a UserControl and I'm trying to export my GridView table to a PDF. I am able to do a CSV file just fine, but I get errors when trying to do a PDF. (I am using iTextSharp Library) This is the error I'm getting:
"Control 'DoNotAddList_1_GridView1' of type 'GridView' must be placed inside a form tag with runat=server."
I have a form tag in my html, and I tried adding it in the ascx file but nothing works. I've found many people getting this error and most everyone suggested adding this to code to the ascx.cs file:
public override void VerifyRenderingInServerForm(Control control) { }
But that gives me this error "no suitable method found to override..."
I don't know what to do. I haven't been able to find a solution. Please Help!!
using System;
using System.Data;
using System.Configuration;
using System.Collections;
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.IO;
using iTextSharp.text;
using iTextSharp.text.pdf;
using iTextSharp.text.html;
using iTextSharp.text.html.simpleparser;
public partial class UserControls_DoNotAddListControl : System.Web.UI.UserControl
{
protected void PDF_Click(object sender, EventArgs e)
{
Response.ContentType = "application/pdf";
Response.AddHeader("content-disposition",
"attachment;filename=GridViewExport.pdf");
Response.Cache.SetCacheability(HttpCacheability.NoCache);
StringWriter sw = new StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(sw);
GridView1.AllowPaging = false;
GridView1.DataBind();
GridView1.RenderControl(hw);
StringReader sr = new StringReader(sw.ToString());
Document pdfDoc = new Document(PageSize.A4, 10f, 10f, 10f, 0f);
HTMLWorker htmlparser = new HTMLWorker(pdfDoc);
PdfWriter.GetInstance(pdfDoc, Response.OutputStream);
pdfDoc.Open();
htmlparser.Parse(sr);
pdfDoc.Close();
Response.Write(pdfDoc);
Response.End();
}
protected void CSV_Click(object sender, EventArgs e)
{
Response.ClearContent();
Response.AddHeader("content-disposition", string.Format("attachment; filename={0}", "BloombergDaily.csv"));
Response.ContentType = "application/text";
GridView1.AllowPaging = false;
GridView1.DataBind();
StringBuilder strbldr = new StringBuilder();
for (int i = 0; i < GridView1.Columns.Count; i++)
{
strbldr.Append(GridView1.Columns[i].HeaderText + ',');
}
strbldr.Append("\n");
for (int j = 0; j < GridView1.Rows.Count; j++)
{
for (int k = 0; k < GridView1.Columns.Count; k++)
{
strbldr.Append(GridView1.Rows[j].Cells[k].Text + ',');
}
strbldr.Append("\n");
}
Response.Write(strbldr.ToString());
Response.End();
}
}
Here's what I have in the aspx file:
<form id="form1" runat="server" action="/">
<div id="donotadd" class="tableWrapper">
<div id="tabs1">
<p>
<div id="tabs-1" >
<div id="DoNotAddListMacro" class="dataTable table_Center">
<umbraco:Macro ID="Macro1" Alias="DoNotAddListControl" runat="server"></umbraco:Macro>
</div>
</div>
</p>
</div>
</div>
</form>
解决方案
Here's the solution I found:
protected void BtnPDF_Click(object sender, EventArgs e)
{
GridView gv = new GridView();
gv.DataSource = SqlDataSource1;
gv.DataBind();
StringWriter sw = new StringWriter();
HtmlTextWriter htw = new HtmlTextWriter(sw);
gv.RenderControl(htw);
var mem = new MemoryStream();
Document document = new Document(PageSize.LETTER, 50, 50, 50, 50);
PdfWriter.GetInstance(document,mem);
document.Open();
iTextSharp.text.html.simpleparser.HTMLWorker hw = new iTextSharp.text.html.simpleparser.HTMLWorker(document);
hw.Parse(new StringReader(sw.ToString()));
document.Close();
Response.ClearContent();
Response.ClearHeaders();
Response.ContentType = "application/pdf";
Response.AddHeader("Content-Disposition", "attachment; filename=" + DateTime.Now);
Response.BinaryWrite(mem.ToArray());
Response.End();
Response.Flush();
Response.Clear();
}
这篇关于用户控件出口的GridView为PDF的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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