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Display First Day of Month C#

Posted on 2010-11-16
Medium Priority
Last Modified: 2013-12-17

I'm trying to avoid using Left/Right properties to extract numbers that will built a date like 11/1/2010-basically I want to display the current month, current year with day 1. Here's what I have thus far...

tmpExDate = Strings.Left(Convert.ToString(Module1.ExDateVal), 2);  //ExDateVal is a DateTime variable
    tmpExDate = tmpExDate + "-1-";
    tmpExDate = tmpExDate + Strings.Right(Convert.ToString(Module1.ExDateVal), 4);
Question by:jcampanali
LVL 52

Expert Comment

by:Carl Tawn
ID: 34150673
Much simpler option:

Dim tmpExDate As New DateTime(Module1.ExDateVal.Year, Module1.ExDateVal.Month, 1)

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LVL 52

Accepted Solution

Carl Tawn earned 100 total points
ID: 34150681
Hmm, lets try that again in C# :)

DateTime tmpExDate = new DateTime(Module1.ExDateVal.Year, Module1.ExDateVal.Month, 1);

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LVL 58

Assisted Solution

cyberkiwi earned 100 total points
ID: 34150781
this gives you the first day of month


if you need a string, put it inside string.format

String.Format("m/d/yyyy", ... )
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Expert Comment

ID: 34151686

DateTime dt = DateTime.Now;
    string s = string.Format("{0:D2}-1-{1:D4}", dt.Month, dt.Year);

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LVL 11

Expert Comment

ID: 34151949
DateTime now = DateTime.Now;
DateTime firstDayofMonth = new DateTime(now.Year, now.Month, 1);
string s = firstDayofMonth.ToShortDateString();

Expert Comment

ID: 34153627
DateTime firstDayofMonth = DateTime.Today.AddDays(-(DateTime.Today.Day - 1));

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