C# - Remove Password From Excel File -- Without Having To Install Excel On Servers?
Jan 12, 2010
I need to remove the password protection from an uploaded excel file. I have been doing this directly with the Excel assemblies (ASP.NET/C#) and then I tried with the ooxmlcrypto, both worked, but the problem is that I can not deploy either of those solution because of the dependencies.
I mean, my sysadmin does not want us installing Excel on the server and, as I have been searching for some alternatives, I can not find one.
My question is: is there a way to put the necessary dlls in the server without installing Excel or the Office suite?
I found this: Office 2007 Primary Interop Assemblies redistributable package but still, it requires a Microsoft Office Product.
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Apr 6, 2014
i use this code to export data into word.
Protected Sub Export(sender As Object, e As EventArgs) Handles btn_printexcel.Click
Response.Clear()
Response.Buffer = True
[Code]....
but the export docs will be downloaded into the user computer.
what should i do so that the exported docs is save into the server?
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Jun 11, 2013
I need to auto fit the dropdown width to auto fit with the cell in excel using c#.net.
I have exported the dropdown to the excel using c#.
when the column width of the cell is increated, the width of the dropdown should be auto fit to the width of the cell.
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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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Sep 1, 2010
i have try to export data to excel using gridview.
I have export it successfully but some data is missing which is due to the column format in the exported excel file is not TEXT .
[Code]....
I need to set the exported excel file column format to TEXT but find no solution on this.
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May 22, 2010
On my local machine i read excel cell for it I used Microsoft.Office.Interop.Excel and there are microsoft office 2007 is installed on my system but when i host site at live server there are microsoft offie 2007 is not installed so that error comes that Microsoft.Office.Interop.Excel could not load.
For it i also try to install o2007pia.msi on server but it gives error install microsoft office 2007 before install this product.
So that iwants to read excel cell with out install MS Office.
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Dec 17, 2010
I am binding a gridView to a List<model>. I am able to export it to an excel file but I am not able to remove a specific column. I tried gridView.Columns.RemoveAt(myIndex) but didn't work and threw a null exception and I am assuming this is because the gridView is not binded to a dataTable.
var models = new ModelService().List(startDate, DateTime.Now);
var gridView = new GridView { DataSource = models };
gridView.DataBind();
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Feb 7, 2012
What am I missing because when my gridview exports the Area (DataTextField) column still has the links although I have a function to remove the links:
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
DataSourceID="SqlDataSource1" EnableModelValidation="True" Width="856px" CaptionAlign="Top" Height="126px" BackColor="White" BorderColor="#DCBE68" BorderStyle="Solid" BorderWidth="1px"
[Code].....
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May 12, 2013
When I am trying to export data from gridview to excel i an also getting hyperlink along with that, how can i remove that before export. below is my code
<div align="right" style="padding-top:5px; padding-right:5px">
<span title="Export Data to Excel"><asp:ImageButton ID="btnExporttoExcel"
runat="server" ImageUrl="~/img/Excel_Logo.png"
onclick="btnExporttoExcel_Click" /></span>
<span title="Export Data to Word"><asp:ImageButton ID="btnExporttoWord"
[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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Jun 10, 2010
How can I export data from a Gridview to excel and once exported the data should be formatted in right to left (arabic) manner. How can I achieve 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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Mar 29, 2011
I'm trying to find a code to delete multiple columns because when you delete a column the next column takes his place so for example:
If you delete column 6 then column 7 becomes column six.
I tried the following code with an for loop & a while loop:
Dim field As DataControlField = gv.Columns(i)
gv.Columns.Remove(field)
&
gv.columns.removeat(i)
But same case that the column 7 becomes column 6
The variable removeColumns is an array with the column number that need to be deleted.
If wanted I can also provide the Header Names
[Code]....
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Feb 18, 2011
i want to export multiple tables in a dataset to excel workbook with each tables as sheets without using COM Interop or Excel Object.
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Sep 22, 2010
We have the requirement to export the data from the grid excel. We can't install the Excel on the server. The excel generated need to be in the printable format. The excel generated needs to have custom headers, footers, repeatble rows, columns and landscape / portrait orientation style.
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Apr 9, 2010
In my project I have to open excel application on click of a button without having ms-excel installed in server and the same case applies to word also. Please suggest me a solutions asap
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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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Jan 22, 2010
I am exporting a gridview in MS Excel as mentioned in the following link:
[URL]
I want to set orientation of excel pages as landscape. Is there any way to do that? Any header information to be added for file being exported to set orientation of pages as landscape?
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Feb 25, 2011
i have table something like this on click of export to excel i need to save that or export that to excel file .can u plz help me how i can do this.one more thing how i can desing and build that big html table into excel is there any simple way i can do the same
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Mar 9, 2010
I want how to upload the excel sheet data and that data will save in Sql Server 2008(table).
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Sep 22, 2010
We are deveopingawebiste in asp.net. There are tempelates of each aspx page made in the form of excel sheet. Upon completion of the online calculation, the user is to be allowed to export the results to excel and save them. There would be obviously no formulae in such sheet
I do not want to install Excel on theserver and instead want to utilize the Excel installed on the user's computer for this purpose as every user's computer is expected to have Excel installed. Is this possible to do? How to do this?
I am not an expert in this. let me know if you would need any more information or clarification.
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Aug 6, 2010
I am trying to create double and number format cells in excel using NPOI library. I used code like
Dim cell As HSSFCell = row.CreateCell(j)
cell.SetCellValue(Double.Parse(dr(col).ToString))
In excel numbers are aligning right but when I check format it is showing in "General"
then I changed my code to like below
Dim cell As HSSFCell = row.CreateCell(j)
cell.SetCellValue(Double.Parse(dr(col).ToString))
Dim cellStyle As HSSFCellStyle = hssfworkbook.CreateCellStyle
cellStyle.DataFormat = HSSFDataFormat.GetBuiltinFormat("#,#0.0")
cell.CellStyle = cellStyle
Then While opening file it is giving error and also taking so long to open. But Excel format showing in "Number" error showing is like below.
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Dec 15, 2010
I want to copy one excel sheet to another excel sheet in new excel book using asp.net and sqlserver 2005
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Mar 4, 2010
I have a GridView that I want to export to Excel. When I use the sample code I find online, it exports the content to Excel just fine, but for some reason it also clears out all grid lines outside of my exported table.
For your average excel user this is easy enough to fix, but I need this solution to work for everyone.
So then is there a way to export the data in a GridView into an Excel Workbook so that it looks like it was just typed into Excel? I've pasted the code I am using below, assume that a GridView called toPrint exists and has accurate data.
Response.Clear();
Response.AddHeader("content-disposition", "attachment; filename=" + name + "_Registration_Forms.xls");
Response.Charset = "";
Response.ContentType = "application/vnd.ms-excel";
Page.EnableViewState = false;
System.IO.StringWriter stringWrite = new System.IO.StringWriter();
System.Web.UI.HtmlTextWriter htmlWrite = new HtmlTextWriter(stringWrite);
toPrint.RenderControl(htmlWrite);
Response.Write(stringWrite.ToString());
Response.End();
EDIT: Found one partial solution. If I export as a comma-delimited list and set the header to be a CSV file, it opens fine and all grid lines (even those outside of the exported data) are showing. The only problem with this of course is having to strip out every comma and newline character from my values before exporting them.
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Mar 22, 2011
I need to read an Excel work book with 2 sheet which have more than 60,000 records. The application is an ASP.Net application so the performance matters.
Which approach should I take? Sohuld I do it using Microsoft.Office.Interop.Excel or should I do it using OLEDB in ADO.Net?
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