Vs2008 read excel file

Active 9 years, 1 month ago. Viewed 6k times. Equals ". Fill dtPatterns ; dtPatterns. Add dtPatterns ; dtPatterns. Improve this question. Community Bot 1 1 1 silver badge. Add a comment. Active Oldest Votes. Improve this answer. Darin Dimitrov Darin Dimitrov k gold badges silver badges bronze badges.

Koogra is great for reading excel. It does not need office installed. Using it with success. Workbook doesn't implement IDisposable , and if you don't clean-up, you will be left with a hanging Excel objects in memory. I hope that gets you started, let me know if you need further clarification. I'll post a complete. To be frank, this stuff is much easier if you use VB. It's in C because I didn't write it. NET does option parameters well, C does not, hence the Type. Once you typed Type.

Missing twice in a row, you run screaming from the room! Here is another example inspired by this site :. I'm one of those weird people who enjoys learning COM automation.

Why don't you create OleDbConnection? There are a lot of available resources in the Internet. Here is an example. First of all, it's important to know what you mean by "open an Excel file for reading and copy it to clipboard This is very important because there are many ways you could do that depending just on what you intend to do. Let me explain:. If you want to read a set of data and copy that in the clipboard and you know the data format e.

If you want to do operations on the data with the Excel object model then open it in the way you began. Some time it's possible to treat an xls file as a kind of csv file, there are tools like File Helpers which permit you to treat and open an xls file in a simple way by mapping a structure on an arbitrary object.

I have, unfortunately I say, a strong experience working with Office automation in all ways, even if bounded in concepts like Application Automation, Data Management and Plugins, and generally I suggest only as the last resort, to using Excel automation or Office automation to read data; just if there aren't better ways to accomplish that task.

Working with automation could be heavy in performance, in terms of resource cost, could involve in other issues related for example to security and more, and last but not at least, working with COM interop it's not so "free".. So my suggestion is think and analyze the situation within your needs and then take the better way. The Output data will be stored in dataset, using the dataset object you can easily access the datas.

Hope this may helpful. Here's a answer - if you don't need to support the older. Use Open XML. Here is some code to process a spreadsheet with a specific tab or sheet name and dump it to something like CSV.

I chose a pipe instead of comma. I wish it was easier to get the value from a cell, but I think this is what we are stuck with. That is what Microsoft recommends.

I tried it with Monodevelop in Unity3D and it is pretty straight forward. Check this sample code to see how the library works:. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. How to read data of an Excel file using C?

Ask Question. Asked 12 years, 10 months ago. Active 1 year, 10 months ago. Viewed k times. FileInfo finfo; Excel. ApplicationClass ; ExcelObj. Workbook theWorkbook; Excel. Worksheet worksheet; if listView1. Text ; if finfo. Open s. Text, 0, true, 5, "", "", true, Excel. Worksheet theWorkbook. Activate ; worksheet. Improve this question. Community Bot 1 1 1 silver badge. New users coming for a solution might want to see this thread.

Add a comment. Active Oldest Votes. OK, One of the more difficult concepts to grasp about Excel VSTO programming is that you don't refer to cells like an array, Worksheet[0][0] won't give you cell A1, it will error out on you. Here's an example: Excel. Sheets["Sheet1"] as Excel. Worksheet; Excel. Value You can now literally type: range. Value if range1! Note: If you don't set the Visibility property Excel doesn't display, which can be disconcerting to your users, but if you want to just rip the data out, that is probably good enough You could OleDb, that will work too.

I'll post a complete here is a complete sample: using System; using System. IO; using System. Reflection; using NUnit. WriteLine file ; Excel.

OpenBook excel, file ; Excel. Sheets["Data"] as Excel. Empty; if range! ToString ; Console. WriteLine ex. ReleaseRCM wkb ; if excel! Edit: As promised, here are the Functions from ExcelTools you might need. Workbook OpenBook Excel. Open fileName, updateLinks, readOnly, Type.

Missing, Type. I want the data to be in the first two columns of the Worksheet and I want the chart to be next to the data.

I want the Tons column to be formatted as a decimal to two places but show as an integer on the chart. I want a chart title and titles on both the X and Y axes. I use some variables simply to make the code easier for me to deal with. The line chart is intended to compare the amount of tons projected to arrive at a port against the amount that actually arrived over a seven day period. The data columns have titles and there is a legend at the bottom that identifies which line is which. I will modify the line color and thickness and reposition the legend.

I have changed and added some variables to accommodate the data and to handle the long string used for a title. Here is the step-by-step explanation:. A word of caution!