From 742953e4934234c7fd650eab1e8d26ac6ff94519 Mon Sep 17 00:00:00 2001
From: Michael Krisper <michael.krisper@tugraz.at>
Date: Tue, 11 Oct 2016 12:39:09 +0200
Subject: [PATCH] VectoCSVFile: Faster writing of CSV files
---
VectoCore/VectoCore/Utils/VectoCSVFile.cs | 31 +++++++++++++----------
1 file changed, 18 insertions(+), 13 deletions(-)
diff --git a/VectoCore/VectoCore/Utils/VectoCSVFile.cs b/VectoCore/VectoCore/Utils/VectoCSVFile.cs
index 7148af4483..5f3b6d2196 100644
--- a/VectoCore/VectoCore/Utils/VectoCSVFile.cs
+++ b/VectoCore/VectoCore/Utils/VectoCSVFile.cs
@@ -198,20 +198,25 @@ namespace TUGraz.VectoCore.Utils
var header = table.Columns.Cast<DataColumn>().Select(col => col.Caption ?? col.ColumnName);
writer.WriteLine(string.Join(Delimiter, header));
- foreach (DataRow row in table.Rows) {
- var row1 = row;
- var formattedList = table.Columns.Cast<DataColumn>().Select(col => {
- var item = row1[col];
- var decimals = (uint?)col.ExtendedProperties["decimals"];
- var outputFactor = (double?)col.ExtendedProperties["outputFactor"];
- var showUnit = (bool?)col.ExtendedProperties["showUnit"];
-
- var si = item as SI;
- return si != null
- ? si.ToOutputFormat(decimals, outputFactor, showUnit)
- : string.Format(CultureInfo.InvariantCulture, "{0}", item);
- });
+ var columnFormatter = new Func<SI, string>[table.Columns.Count];
+ for (var i = 0; i < table.Columns.Count; i++) {
+ var col = table.Columns[i];
+ var decimals = (uint?)col.ExtendedProperties["decimals"];
+ var outputFactor = (double?)col.ExtendedProperties["outputFactor"];
+ var showUnit = (bool?)col.ExtendedProperties["showUnit"];
+
+ columnFormatter[i] = item => item.ToOutputFormat(decimals, outputFactor, showUnit);
+ }
+ foreach (DataRow row in table.Rows) {
+ var items = row.ItemArray;
+ var formattedList = new string[items.Length];
+ for (var i = 0; i < items.Length; i++) {
+ var si = items[i] as SI;
+ formattedList[i] = si != null
+ ? columnFormatter[i](si)
+ : formattedList[i] = string.Format(CultureInfo.InvariantCulture, "{0}", items[i]);
+ }
writer.WriteLine(string.Join(Delimiter, formattedList));
}
}
--
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