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Export data from gridview to excel (processing data such as ID card)

Source: Internet
Author: User
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// The following is a demo

Protected void page_load (Object sender, eventargs E)

{
Datatable dt = createtable ();
// Fill in data
Initialdatatable (DT );
// Bind
Binddata (DT );
}

Private void binddata (datatable DT)
{
Grdinfo. datasource = DT;
Grdinfo. databind ();
}

Private void initialdatatable (datatable DT)
{
For (INT I = 0; I <100; I ++)
{
Datarow DR = DT. newrow ();
Dr ["name"] = "name" + I. tostring ("000 ");
Dr ["Age"] = I. tostring ();
Dr ["gender"] = "male ";
Dr ["ID card"] = "123456789012345" + I. tostring ("000 ");
DT. Rows. Add (DR );
}
}

Private datatable createtable ()
{
Datatable dttemp = new datatable ();
Datacolumn clmxm = new datacolumn ("name", typeof (system. String ));
Dttemp. Columns. Add (clmxm );
Datacolumn clmnl = new datacolumn ("Age", typeof (system. String ));
Dttemp. Columns. Add (clmnl );
Datacolumn clmxb = new datacolumn ("gender", typeof (system. String ));
Dttemp. Columns. Add (clmxb );
Datacolumn clmsfz = new datacolumn ("ID card", typeof (system. String ));
Dttemp. Columns. Add (clmsfz );
Return dttemp;
}

Protected void btnexport_click (Object sender, eventargs E)
{
// You can use either of the following methods to export data:
// Method 1.
/* When using the following method to export data in the form of ID card to excel, you need to add a style to the cell data of the ID card before export
Foreach (gridviewrow DG in grdinfo. Rows)
{
DG. cells [3]. Attributes. Add ("style", "Vnd. ms-excel.numberformat :@;");
String A = DG. cells [3]. text;
}
Or
Protected void grdinfo_rowdatabound (Object sender, gridviewroweventargs E)
{
If (E. Row. rowtype = datacontrolrowtype. datarow)
{
// 3 indicates the ID card Column
E. Row. cells [3]. Attributes. Add ("style", "Vnd. ms-excel.numberformat :@;");
}
}
*/
// The black border is displayed in the data area, and the rest are blank.
Export (grdinfo, "application/vnd. MS-excel", "data.xls ");

// Method 2
/*
If you use the following method to export data in the form of ID card to excel
The following statement cannot be used
Foreach (gridviewrow DG in grdinfo. Rows)
{
DG. cells [3]. Attributes. Add ("style", "Vnd. ms-excel.numberformat :@;");
String A = DG. cells [3]. text;
}
Or
Protected void grdinfo_rowdatabound (Object sender, gridviewroweventargs E)
{
If (E. Row. rowtype = datacontrolrowtype. datarow)
{
// 3 indicates the ID card Column
E. Row. cells [3]. Attributes. Add ("style", "Vnd. ms-excel.numberformat :@;");
}
}
Style needs to be added to the <TD> label <TD style = vnd. ms-excel.numberformat: @>
*/
// Same as the default Excel file, it has a default grid.
Export1 (grdinfo, "", "data.xls ");
}

Public void Export (system. Web. UI. Control source, string filetype, string filename)
{
Httpresponse response = httpcontext. Current. response;
Response. Clear ();
Response. Buffer = true;
Response. charset = "UTF-8"; // default-Value
Response. contentencoding = system. Text. encoding. utf7;
Response. addheader ("content-disposition", "attachment; filename =" + httputility. urlencode (filename, system. Text. encoding. utf8). tostring ());
Response. contenttype = filetype;
Source. Page. enableviewstate = false;
System. Io. stringwriter Sw = new system. Io. stringwriter ();
Htmltextwriter hW = new htmltextwriter (SW );
Source. rendercontrol (HW );
Response. Write (SW. tostring ());
Response. End ();
}
Public static void export1 (gridview source, string filetype, string filename)
{
If (source. Rows. Count> 0)
{
Httpcontext CTX = httpcontext. Current;
Stringwriter Sw = new stringwriter ();
Sw. writeline ("Sw. writeline ("<HTML xmlns: x = \" urn: Schemas-Microsoft-com: Office: Excel \ "> ");
Sw. writeline ("Sw. writeline ("<! -- [If gte mso 9]> ");
Sw. writeline ("<XML> ");
Sw. writeline ("<X: excelworkbook> ");
Sw. writeline ("<X: excelworksheets> ");
Sw. writeline ("<X: excelworksheet> ");
Sw. writeline ("<X: Name> data </X: Name> ");
Sw. writeline ("<X: worksheetoptions> ");
Sw. writeline ("<X: Print> ");
Sw. writeline ("<X: validprinterinfo/> ");
Sw. writeline ("</X: Print> ");
Sw. writeline ("</X: worksheetoptions> ");
Sw. writeline ("</X: excelworksheet> ");
Sw. writeline ("</X: excelworksheets> ");
Sw. writeline ("</X: excelworkbook> ");
Sw. writeline ("</XML> ");
Sw. writeline ("<! [Endif] --> ");
Sw. writeline ("Sw. writeline ("<body> ");
Sw. writeline ("<Table> ");
For (INT I = 0; I <source. Rows. Count; I ++)
{
If (I = 0)
{
Sw. writeline ("<tr> ");
For (Int J = 0; j <source. Columns. Count; j ++)
{
Sw. writeline ("<TD> <strong>" + source. Columns [J]. headertext + "</strong> </TD> ");
}
Sw. writeline ("</tr> ");
}
Sw. writeline ("<tr> ");
For (Int J = 0; j <source. Columns. Count; j ++)
{
// Sw. writeline ("<TD>" + source. Rows [I]. cells [J]. Text + "</TD> ");
// J = 3 indicates the ID card Column
If (j = 3)
{
// Add this sentence, like ID card needs to add style = vnd. ms-excel.numberformat: @ this sentence,
// Otherwise, data is displayed in scientific notation
Sw. writeline ("<TD style = vnd. ms-excel.numberformat: @>" + source. Rows [I]. cells [J]. Text + "</TD> ");
}
Else
{Sw. writeline ("<TD>" + source. Rows [I]. cells [J]. Text + "</TD> ");}
}
Sw. writeline ("</tr> ");
}
Sw. writeline ("</table> ");
Sw. writeline ("</body> ");
Sw. writeline ("Sw. Close ();
CTX. response. Clear ();
CTX. response. Buffer = true;
CTX. response. charset = "UTF-8 ";
Source. Page. enableviewstate = false;
CTX. response. addheader ("content-disposition", "attachment; filename =" + filename + "");
CTX. response. contenttype = "application/MS-excel ";
CTX. response. contentencoding = system. Text. encoding. getencoding ("gb2312 ");
CTX. response. Write (SW );
CTX. response. End ();
}
}

Public override void verifyrenderinginserverform (Control)
{
}

// You can set the style in method 1.
Protected void grdinfo_rowdatabound (Object sender, gridviewroweventargs E)
{
If (E. Row. rowtype = datacontrolrowtype. datarow)
{
// 3 indicates the ID card Column
E. Row. cells [3]. Attributes. Add ("style", "Vnd. ms-excel.numberformat :@;");
}
}

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

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