[英]Accessing the data from the gridview to download a PDF document in asp.net
FID NAME
M001 Faculty1 download
M002 Faculty2 download
M003 Faculty3 download
上面顯示的是我的網格視圖,其中包含教師的詳細信息,並且下載鏈接指示要下載的教師的pdf形式。
va = (string)Session["FID"];
protected void DownloadFile(object sender, EventArgs e)
{
DataRow dr = GetData("select * from Personal_det where FID ='"+va+"'").Rows[0];
Document doc = new Document(PageSize.A4, 88f, 88f, 10f, 10f);
Font NormalFont = FontFactory.GetFont("Arial", 12, Font.NORMAL, BaseColor.BLACK);
using (System.IO.MemoryStream m = new System.IO.MemoryStream())
{
PdfWriter w = PdfWriter.GetInstance(doc, m);
Phrase phrase = null;
PdfPCell cell = null;
PdfPTable table = null;
BaseColor color = null;
Paragraph para = null;
Font times = null;
BaseFont bfTimes = null;
doc.Open();
table = new PdfPTable(2);
cell = PhraseCell(new Phrase("Faculty Profile", FontFactory.GetFont("Arial", 12, Font.UNDERLINE, BaseColor.BLACK)), PdfPCell.ALIGN_CENTER);
//table.SpacingBefore = 20f;
cell.Colspan = 2;
table.AddCell(cell);
cell = PhraseCell(new Phrase(), PdfPCell.ALIGN_CENTER);
cell.Colspan = 2;
cell.PaddingBottom = 30f;
//FID
table.AddCell(PhraseCell(new Phrase("Faculty Code:", FontFactory.GetFont("Arial", 8, Font.BOLD, BaseColor.BLACK)), PdfPCell.ALIGN_LEFT));
table.AddCell(PhraseCell(new Phrase("mahe" + dr["FID"].ToString(), FontFactory.GetFont("Arial", 8, Font.NORMAL, BaseColor.BLACK)), PdfPCell.ALIGN_LEFT));
cell = PhraseCell(new Phrase(), PdfPCell.ALIGN_CENTER);
cell.Colspan = 2;
cell.PaddingBottom = 10f;
table.AddCell(cell);
//Name
table.AddCell(PhraseCell(new Phrase("Name:", FontFactory.GetFont("Arial", 8, Font.BOLD, BaseColor.BLACK)), PdfPCell.ALIGN_LEFT));
table.AddCell(PhraseCell(new Phrase(dr["Name"].ToString(), FontFactory.GetFont("Arial", 8, Font.BOLD, BaseColor.BLACK)), PdfPCell.ALIGN_LEFT));
cell = PhraseCell(new Phrase(), PdfPCell.ALIGN_CENTER);
cell.Colspan = 2;
cell.PaddingBottom = 10f;
table.AddCell(cell);
//Date of Birth
table.AddCell(PhraseCell(new Phrase("Date of Birth:", FontFactory.GetFont("Arial", 8, Font.BOLD, BaseColor.BLACK)), PdfPCell.ALIGN_LEFT));
table.AddCell(PhraseCell(new Phrase(Convert.ToDateTime(dr["DOB"]).ToString("dd MMMM, yyyy"), FontFactory.GetFont("Arial", 8, Font.NORMAL, BaseColor.BLACK)), PdfPCell.ALIGN_LEFT));
cell = PhraseCell(new Phrase(), PdfPCell.ALIGN_CENTER);
cell.Colspan = 2;
cell.PaddingBottom = 10f;
table.AddCell(cell);
//Phone Number
table.AddCell(PhraseCell(new Phrase("Phone Number:", FontFactory.GetFont("Arial", 8, Font.BOLD, BaseColor.BLACK)), PdfPCell.ALIGN_LEFT));
table.AddCell(PhraseCell(new Phrase(Convert.ToInt64(dr["MobileNo"]).ToString(), FontFactory.GetFont("Arial", 8, Font.NORMAL, BaseColor.BLACK)), PdfPCell.ALIGN_LEFT));
cell = PhraseCell(new Phrase(), PdfPCell.ALIGN_CENTER);
cell.Colspan = 2;
cell.PaddingBottom = 10f;
table.AddCell(cell);
//Mail Id
table.AddCell(PhraseCell(new Phrase("Email ID:", FontFactory.GetFont("Arial", 8, Font.BOLD, BaseColor.BLACK)), PdfPCell.ALIGN_LEFT));
table.AddCell(PhraseCell(new Phrase(dr["EmailId"].ToString(), FontFactory.GetFont("Arial", 8, Font.BOLD, BaseColor.BLACK)), PdfPCell.ALIGN_LEFT));
cell = PhraseCell(new Phrase(), PdfPCell.ALIGN_CENTER);
cell.Colspan = 2;
cell.PaddingBottom = 10f;
table.AddCell(cell);
//Address
table.AddCell(PhraseCell(new Phrase("Res Address:", FontFactory.GetFont("Arial", 8, Font.BOLD, BaseColor.BLACK)), PdfPCell.ALIGN_LEFT));
phrase = new Phrase(new Chunk(dr["add1"] + "\n " + dr["add2"] + "\n " + dr["add3"] + "\n " + dr["Pincode"], FontFactory.GetFont("Arial", 8, Font.NORMAL, BaseColor.BLACK)));
table.AddCell(PhraseCell(phrase, PdfPCell.ALIGN_LEFT));
cell = PhraseCell(new Phrase(), PdfPCell.ALIGN_CENTER);
cell.Colspan = 2;
cell.PaddingBottom = 10f;
table.AddCell(cell);
table.SpacingAfter = 30f;
doc.Add(table);
}
我的網格視圖代碼如下所示
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
DataSourceID="SqlDataSource1"
Width="294px" onselectedindexchanged="GridView1_SelectedIndexChanged"
>
<Columns>
<asp:BoundField DataField="FID" HeaderText="FID" SortExpression="FID" />
<asp:BoundField DataField="Name" HeaderText="Name" SortExpression="Name" />
<asp:TemplateField ItemStyle-HorizontalAlign="Center">
<ItemTemplate>
<asp:LinkButton ID="lnkDownload" runat="server"
CommandArgument="<("Value")>" OnClick="DownloadFile"
Text="Download" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:ProjectConnectionString %>"
SelectCommand="SELECT [FID], [Name] FROM [Personal_det]">
</asp:SqlDataSource>
出現的問題是,即使我也單擊其他教師的下載按鈕,只要我單擊下載按鈕,就會顯示第一教師的PDF,我需要獲取每個教師的數據。如何獲取pdf?
我的要求是,應為特定的FID下載特殊的pdf文件,而不應僅為第一個FID下載。
在你里面itemtemplate
<asp:LinkButton ID="lnkDownload" runat="server"
CommandArgument='<%#Eval("FID")%>' CommandName="DownloadFile" OnClick="DownloadFile" Text="Download" />
在.cs中
protected void DownloadFile(object sender, EventArgs e)
{
string FID = Convert.ToString(((LinkButton)sender).CommandArgument);
DataRow dr = GetData("select * from Personal_det where FID = '"+ FID +"'").Rows[0];
.....
//other codes
}
願這一行代碼可以幫助您解決問題
在將FID設置為會話時。 用戶單擊“下載”按鈕后,將同時調用該函數。 它從第一行開始,將使用第一個ID。 現在,它將在會話變量中分配,並且每次點擊都重復相同的過程。 您必須通過GridView的RowDataBound管理事件。
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