DataSource Controls :: Exporting From Sql Server To Excel?
Feb 10, 2010
The following code is a short version of a process to export data from Sql Server to Excel. I am moving 300k of data to excel and am having to divide it up into 65500+ blocks. This is not a problem in classic asp but .net does not seem to like this method. When ExecuteNonQuery() executes the insert statement each time through the loop it really slows down this process. Otherwise in runs in seconds commenting out ExecuteNonQuery(). Also it looks like the excel file does not grow until the very end. I would think it would be inserting every time it did ExecuteNonQuery(). Do I have something wrong here or should I do a completely different method for this?
using (SqlConnection conn = new SqlConnection(sqlConnString)
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Similar Messages:
Feb 2, 2010
well I am trying to export sql data that has 80,000 records more than 65,000 rows which excel has.i do I export that much data in one trial without error.is it posible with bcp utility?
I tried DTS but did not work what option shall i use to define range in excel file to export data ?
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Feb 28, 2013
I'm exporting a Gridview to excel. I get all the gridview header and content in excel in addition to that i need to add a header text like report name in header of the excel sheet with line break in header.
I tried the solution in this link [URL] by adding
Table.Caption = "Header Text"
Table.CaptionAlign = TableCaptionAlign.Top
but i get error Reference to a non shared member requires an object reference.
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Apr 1, 2010
when I used a code of exporting gridview into excel this code worked for a new website which is without masterpage.
my code:
public override void VerifyRenderingInServerForm(Control control) { }
protected void BtnGenerateReport_Click(object sender, EventArgs e)
{
Response.Clear();
Response.Buffer = true;
Response.AddHeader("content-disposition",
"attachment;filename=GridViewExport.xls");
Response.Charset = "";
Response.ContentType = "application/vnd.ms-excel";
StringWriter sw = new StringWriter();.....
Now the same code when I copy it in my project having masterpage . there is no compiler error but it is genereating excel file withno data in it but in fact there is data in the grid view at runtime.
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Jun 28, 2010
Exporting Datasource results to excel not just report data.My datasource is a stored procedure that returns a lot of fields that are not on the report itself. I would like the entire result of dataset to export to an excel file if user chooses.
SSRS / 2005 BIDS
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Oct 17, 2013
I have a project in vb with a gridview in a multiview and i want to save in a workbook excel the gridview displayed data. I have read many articles but in the end i have downloaded the code from URL...and i adapted for my code. The problem is that when i press the ExporttoExcel button it's exporting only this...I cannot figure out that is the problem.
<style> .textmode { mso-number-format:@; } </style><div>
</div>
My code is down
Imports System.Data
Imports System.Data.SqlClient
Imports System.Web.UI.WebControls.TableRow
Imports System.Web.UI.WebControls.GridViewRow
Imports System.Diagnostics
Imports System.IO
Imports System.Configuration
[code]....
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Apr 20, 2010
i am trying to compare four columns in two tables(both are in the same schema), table a has two columns for firstname and last name , table b has similar columns firstname and last name, i wish to compare both and if there are similarities, do nothing but if there are differencies, export or write them to a exception or error table.. not quite sure what if statement i should write or how to go about this.
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Nov 2, 2010
I've got an .rdlc report which I print from my .net app (C# Visual Studio 2005), where I use a RemoteReportPrinter object. I give it as parameters the server name, report name, report parameters, etc. Works fine. My question is, I would live to do an analagous export of that report to Excel. Set it up exactly the same, but have it export to Excel rather than print, probably using some other type of object than RemoteReportPrinter.
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Feb 2, 2011
I am trying to export an ASP.NET 3.5 DataGridView to Excel using the following code :
protected
void Button1_Click(object sender,
EventArgs e)
{
Response.Clear();
Response.Buffer = true ;
Response.AddHeader("content-disposition" ,
"attachment;filename=text.xls" );
Response.Charset = "" ;
Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet" ;
StringWriter sw =
new StringWriter ();
HtmlTextWriter hw =
new HtmlTextWriter (sw);
GridView1.DataSource = RecordsDataSet;
GridView1.DataBind();
GridView1.AllowPaging = false ;
GridView1.DataBind();
GridView1.HeaderRow.Style.Add("background-color" ,
"#FFFFFF" );
for (int i = 0; i < GridView1.Rows.Count; i++)
{
GridViewRow row = GridView1.Rows[i];
//Change Color back to white
row.BackColor = System.Drawing.Color .White;
//Apply text style to each Row
row.Attributes.Add("class" ,
"textmode" );
}
GridView1.RenderControl(hw);
//style to format numbers to string...........
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Feb 8, 2010
I need a way to export data from MySql database (or simply from DataTable) to Excel and set colors of particular rows based on one of the fields' content.
I don't want to export the whole GridView because I need a way to add fields with calculated values as needed.
I have the following code that works:
[Code]....
But I don't know how to set colors to particular rows. Also, I don't know how to make Excel treat text fields that look like numbers as text to avoit scientific notation.
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Jan 27, 2010
I currently have a data grid that exports to Excel on an ASP.NET page (which is used for reporting purposes) which works great until we put it under the stresses of a full scale production environment. With a multitude of users using it it seems to fill up the server memory quite quickly since the data thats being pulled is rather large. The requirements of the page are: The data needs to be queried and exported to excel, so theres no point to getting around that. I've noticed that xls files are rather large in comparison to their xlsx counter parts, using xlsx files would be fine for my application. I've noticed that xlsb (Excel binary) are even smaller(approx 25% the size of the their xls counterpart). Is there anyway to change my code to export to xlsb (first choice) or xlsx rather than xls? I think it has something to do with Mime Types but I'm not positive.
Here is the code that I'm using for exporting:
[Code]....
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Aug 16, 2010
I found the following code online but I get error message "
RegisterForEventValidation can only be called during Render();
My C# code is:
[Code]....
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Jul 15, 2010
I am exporting GridView to Excel but keep on getting a pop up "The file you are trying to open, 'somefile.xls' is in a different format than specidied by the file extension. Verify that the file is not corrupted and is from a trusted source before opening the file. Do you want to open the file now?When I click "yes" the file opens fine. But why I am getting the pop up at the first place.Also as I have Office 2007 on my machine
GridView1.DataSource = dv;
GridView1.DataBind();
Response.Clear();
Response.Buffer = true;
[code]...
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Apr 28, 2010
I am creating some Graphs using Asp.net Charting control. I need to export the charts created to excel. These charts are going to be saved as images. I am able to export the Graph along with other details successfully using the foloowing code...
Response.Clear();
Response.Buffer = true;
Response.AddHeader("content-disposition", "attachment; filename=Sample.xls");
Response.Charset = "";
Response.ContentType = "application/vnd.ms-excel";
StringWriter stringWriter = new StringWriter();
HtmlTextWriter htmlTextWriter = new HtmlTextWriter(stringWriter);
Table1.RenderControl(htmlTextWriter);
htmlTextWriter.WriteBreak();
string test = Server.MapPath("~/");.......
If i try to open this excel file in any other system, then the image (i.e, charts) wont be available. But the excel shows the image only in my system(where the image is available in hard disk) .
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Jan 20, 2011
I have the following scenario shown below
Label: Name
ID Qty
1 10
2 5
Kindly note, the ID. QTy are currently in a gridview and the Label is a label on top of the gridview. I would like to export both the label and the gridview to excel...how can I do this.
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Jun 25, 2010
This is an ASP.NET 3.5 project being created with VS2008. One page contains a gridview with six columns. One of the columns displays standard, 17 character , Vehicle Identification Numbers (VIN). The VIN numbers display normally when the page is rendered. However, when the gridview is exported to Excel, the VIN numbers change. For example, in the gridview, the VIN might be 12345678912345678But when the gridview exports into Excel, that same VIN becomes 1.23457E+16The value of that Excel cell changes to 12345678912345600, changing the last two digits from 78 to 00. It does this for every VIN in the gridview table.I did some Googling but couldn't find anything specifically on this issue. Has anyone seen it before? Is there a way to format the column in the gridview so that Excel will accept it as literal text? I tried programmatically adding a style called 'text' to that column but that had no effect on the outcome. All of the other columns are behaving normally.
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May 7, 2015
I am able to save excel sheet from GridView perfectly. However, I need to add one custom column, which will be URL of a file on sever, I am not allowed to add URLs directly in the table (as per company's development policies). I tried pulling URL from web.config however I am not sure where to add that in the following code
<asp:GridView ID="bestpractgrv" runat="server" AutoGenerateColumns="False" CellPadding="3" GridLines="Vertical" Width="100%" BackColor="White" BorderColor="#999999" BorderStyle="None" BorderWidth="1px" PageSize="10" AllowPaging="True" OnPageIndexChanging="OnPaging" DataKeyNames="iID">
<AlternatingRowStyle BackColor="Gainsboro" />
<Columns>
[code]....
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Aug 20, 2010
I'm using code similar to code mention at http://www.dutch-creatives.com/post/2009/08/11/Export-ListView-to-Excel.aspx
to export Listview to excel
My listview [Code]....
I tried to debug, understand why it is generating an extra tr td but couldn't.How Can i directly cast item into HTMLTablerow?
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Feb 2, 2010
This is the class file im using to export the datagrid to excel sheet.Problem is i cant able to transfer the image from gridview to excel sheet using this code. What are the modifications i can do for the below code to export the image.
public class ExcelReport { # region Export to excel /// /// Function for Export html report to Excel sheet /// /// File name /// Gridview /// public void ExportToExcel(string fileName, GridView gv) { try { 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)) { Table table = new Table(); if (gv.HeaderRow
!= null) { //gv.HeaderRow.CssClass = "GridviewStyle"; // gv.HeaderRow.Font.Bold = true; PrepareControlForExport(gv.HeaderRow); table.Rows.Add(gv.HeaderRow); } foreach (GridViewRow row in gv.Rows) { //row.CssClass = "GridviewStyle"; // row.BorderColor = System.Drawing.Color.Blue;
// row.Height = 20; PrepareControlForExport(row); table.Rows.Add(row); } if (gv.FooterRow != null) { PrepareControlForExport(gv.FooterRow); table.Rows.Add(gv.FooterRow); } table.RenderControl(htw); HttpContext.Current.Response.Write(sw.ToString()); HttpContext.Current.Response.Flush();
HttpContext.Current.Response.End(); } } } catch (Exception ex) { throw ex; } } private 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....................................
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Nov 10, 2010
I found a few examples online and followed them, but wasnt getting any results, just errors..Here is what i have in my button event that i want to use to create the files..
[Code]....
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Jun 22, 2010
I finally managed to export a gridview to an excel sheet.
Next, how can I remove the column width and alternatingrowstyle color (or all formatting if it is easier) "programatically" before exporting it to excel?
Demonstration of what I am trying to accomplish:
[Code]....
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May 7, 2015
My datatable has 0123 when I export it becomes 123, Datatable can be numeric or alphanumeric, after searching I got this link [URL] ....
I didnt managed to use your code in DataTable.
My Code.
dtExport is my DataTable
DataGrid dGrid = new DataGrid();
dGrid.DataSource = dtExport;
dGrid.DataBind();
StringWriter sw = new StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(sw);
dGrid.RenderControl(hw);
[Code]....
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Sep 10, 2012
I am trying to export a gridview that is returned from a search form. The gridview also has paging enabled. In order to export the records from all pages in the gridview I had to turn off paging and do a databind, but instead of only exporting the search results it exports all the records in the gridview.
How can I only export the records from the search results, but also the make sure the records on the different pages export also?
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Jan 10, 2013
With the code i have below i am able to export only one page of gridview to excel. check and modify it once.so that i can import all the pages of gridview to excel at a time with checked status of checkbox.
protected void btnExporttoExcel_Click(object sender, EventArgs e)
{
DataTable dt = new DataTable();
dt.Columns.AddRange(new DataColumn[5] { new DataColumn("Presentees"), new DataColumn("StudentName"), new DataColumn("ColgRegisterNum"), new DataColumn("CollegeName"), new DataColumn("Date"), });
foreach (GridViewRow row in gvStdntDetails.Rows)
[code]...
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May 7, 2015
I exported some data from a gridview to an Excel with Images.
I need to give a specified height and width for all the rows and text to be aligned centre.
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