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Published on 2009-09-10T12:37:52Z
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How do I read large CSV files using C# & display it on the browser?
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This is from the DBD::File-documentation:
f_ext
This attribute is used for setting the file extension where (CSV) files are opened. There are several possibilities.
DBI:CSV:f_dir=data;f_ext=.csv
In this case, DBD::File will open only table.csv if both table.csv and table exist…
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Here is my class,
public class FreebasePeopleResults {
public String intendedSearch;
public String weight;
public Double heightMeters;
public Integer age;
public String type;
public String parents;
public String profession;
public String alias;
public String children;
public String siblings;
public…
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What am I trying to do: export data to csv.
I have a form which allows user to select the format (from a drop down menu). So based on the selection of the format the ouput is displayed using a ajax call. Works fine for html but when I select the format as csv I don't see any pop up on the screen…
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I have these 3 files
21/08/2014 07:15 PM 122 Tw2AWK.csv
21/08/2014 07:15 PM 125 Tw2Notepad.csv
21/08/2014 07:15 PM 119 Tw2REPL.csv
C:\myfilesfile Tw2AWK.csv TwREPL.csv Tw2Notepad.csv
Tw2AWK.csv; UTF-8 Unicode text, with CRLF line terminators
Tw2REPL…
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My data:
It's a 71 MB file with 1.5 million rows.
It has 6 fields
All six fields combine to form a unique key - so that's what I need to sort on.
Sort statement:
sort -t ',' -k1,1 -k2,2 -k3,3 -k4,4 -k5,5 -k6,6 -o output.csv input.csv
The problem:
If I sort without keys, it takes 30 seconds…
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I’ve run into the problem a few times now: How to pre-authenticate .NET WebRequest calls doing an HTTP call to the server – essentially send authentication credentials on the very first request instead of waiting for a server challenge first? At first glance this sound like it should be easy:…
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Man I can't believe this. I'm still mucking around with OFX servers and it drives me absolutely crazy how some these servers are just so unbelievably misconfigured. I've recently hit three different 3 major brokerages which fail HTTP validation with bad or corrupt certificates at least according to…
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The dynamic type in C# 4.0 is a welcome addition to the language. One thing I’ve been doing a lot with it is to remove explicit Reflection code that’s often necessary when you ‘dynamically’ need to walk and object hierarchy. In the past I’ve had a number of ReflectionUtils that used string based expressions…
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I’ve written quite a bit about Visual FoxPro interoperating with .NET in the past both for ASP.NET interacting with Visual FoxPro COM objects as well as Visual FoxPro calling into .NET code via COM Interop. COM Interop with Visual FoxPro has a number of problems but one of them at least got a lot…
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Here’s a nice and simple path utility that I’ve needed in a number of applications: I need to find a relative path based on a base path. So if I’m working in a folder called c:\temp\templates\ and I want to find a relative path for c:\temp\templates\subdir\test.txt I want to receive back subdir\test…
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