How do add a line break in C#

Question

4.00/5 (1 vote)

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I have some logic behind a web form I'm building. The logic handles whether a user entered a valid value for required field. Code below:

C#

var operationResult = new BO.OperationResult();

         // Physical Location Required
         if (physicalLocationDesc.Trim().Length <= 0)
         {
             operationResult.Successful = false;
             operationResult.Message += "A location is required as part of the entry";
         }
         // Type of Connection Desc. Required
         if (typeOfConnectionID.Trim().Length <= 0)
         {
             operationResult.Successful = false;
             operationResult.Message += "A description for the connection type is required.";
         }
         // Password change frequency desc. required
         if (passwordChangeFrequency.Trim().Length <= 0)
         {
             operationResult.Successful = false;
             operationResult.Message += "Please enter a description for the Password Change Frequency";
         }

The issue that I'm having is that the operationResult.Message is returning:

"A location is required as part of the entryA description for the connection type is required.Please enter a description for the Password Change Frequency"

I'd like to add a line break after each individual error message. Any ideas on how to go about this? (Please note the code above works fine if 1 field is not entered but becomes harder to read 2 or more fields are not entered.)

Posted 30-Jul-15 3:56am

Member 11820531

Add a Solution

8 solutions

Solution 1

Use the Environment.NewLine method:
http://www.dotnetperls.com/newline[^]

Posted 30-Jul-15 4:06am

ZurdoDev

Comments

Member 11820531 30-Jul-15 10:19am

I've attempted to use:
operationResult.Message += "Message" + Environment.NewLine; // still did not work
operationResult.Message += "Message" + "\r\n" // also did not work

ZurdoDev 30-Jul-15 10:40am

That will put a new line at the very end. I don't think that is what you want, is it?

Solution 2

System.Envirement.NewLine is your solution. See example:
http://www.dotnetperls.com/newline[^]

Posted 30-Jul-15 4:07am

stibee

Solution 5

Two ways:
1. Keep the individual message separate as long as possible and then combine them once at "the end":

C#

var operationResult = new BO.OperationResult();
 List<string> messages = new List<string>();
// Physical Location Required
if (string.IsNullOrWhiteSpace(physicalLocationDesc))
{
  operationResult.Successful = false;
  messages.Add("A location is required as part of the entry");
}
// Type of Connection Desc. Required
if (string.IsNullOrWhiteSpace(typeOfConnectionID))
{
  operationResult.Successful = false;
  messages.Add("A description for the connection type is required.");
}
// Password change frequency desc. required
if (string.IsNullOrWhiteSpace(passwordChangeFrequency))
{
  operationResult.Successful = false;
  messages.Add("Please enter a description for the Password Change Frequency");
}
// etc...
operationResult.Message = string.Join(Environment.NewLine, messages);

2. Use a StringBuilder:

C#

var operationResult = new BO.OperationResult();
 StringBuilder messages = new StringBuilder();
string sep = string.Empty;
// Physical Location Required
if (string.IsNullOrWhiteSpace(physicalLocationDesc))
{
  operationResult.Successful = false;
  messages.Append(sep).Append("A location is required as part of the entry");
  sep = Environment.NewLine;
}
// Type of Connection Desc. Required
if (string.IsNullOrWhiteSpace(typeOfConnectionID))
{
  operationResult.Successful = false;
  messages.Append(sep).Append("A description for the connection type is required.");
  sep = Environment.NewLine;
}
// Password change frequency desc. required
if (string.IsNullOrWhiteSpace(passwordChangeFrequency))
{
  operationResult.Successful = false;
  messages.Append(sep).Append("Please enter a description for the Password Change Frequency");
  sep = Environment.NewLine;
}
// etc...
operationResult.Message = messages.ToString();

Posted 30-Jul-15 8:53am

Matt T Heffron

Updated 30-Jul-15 8:54am

v2

Solution 6

What the previous solutions have missed is the comment "a web form". That suggests that your messages are being output to an HTML document.

HTML ignores line breaks and most white-space. To force the message to appear on multiple lines, you'll need to use a <br> tag[^].

C#

var operationResult = new BO.OperationResult();
var messages = new List<string>(3);

// Physical Location Required
if (physicalLocationDesc.Trim().Length <= 0)
{
    operationResult.Successful = false;
    messages.Add("A location is required as part of the entry");
}
// Type of Connection Desc. Required
if (typeOfConnectionID.Trim().Length <= 0)
{
    operationResult.Successful = false;
    messages.Add("A description for the connection type is required.");
}
// Password change frequency desc. required
if (passwordChangeFrequency.Trim().Length <= 0)
{
    operationResult.Successful = false;
    messages.Add("Please enter a description for the Password Change Frequency");
}

if (messages.Count != 0)
{
    operationResult.Message = string.Join("<br>", messages);
}

Posted 30-Jul-15 9:14am

Richard Deeming

Updated 30-Jul-15 9:15am

v3

Solution 3

The effect of line break depends on where you output a string. If, for example, you show text in controls like text boxes, you generally need to use end-of-line character(s): http://en.wikipedia.org/wiki/End-of-line[^].

As you can see, the exact character(s) depend on the platform, so you should always use a platform-independent System.Environment.NewLine:
https://msdn.microsoft.com/en-us/library/68ah771x%28v=vs.110%29.aspx[^].

By the way, never use repeated string concatenations; strings are immutable (do I even have to explain the consequences? this is performance) — always use mutable type System.Text.StringBuilder; for fixed string format, use string.Format.

—SA

Posted 30-Jul-15 4:11am

Sergey Alexandrovich Kryukov

Solution 4

C#

shippedItems.AddRange(OrderItem.FetchLastWeeksOrderItems(MARKET, serverTime));

public class OrderItem
{
    public static IEnumerable<OrderItem> FetchLastWeeksOrderItems(
        string market, DateTime serverTime)
    {
        return OrderItem.Fetch(
            market: market,
            shipConfirmState: ORDERITEMSHIPCONFIRMSTATE.NONE,
            orderPlacedAfter: serverTime.AddDays(-7),
            orderPlacedBefore: serverTime.AddHours(-85));
    }

    private static IEnumerable<OrderItem> Fetch( ... )
    {
        ...
    }
}

Posted 30-Jul-15 7:34am

Kuldeep Kumar

Comments

Matt T Heffron 30-Jul-15 14:55pm

Nothing in this solution addresses the question at hand!

Solution 8

Environment has Property NewLine for this purpose

Posted 14-Aug-15 22:11pm

VahidJafari

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Member 11820531 · Accepted Answer · 2015-08-14T12:14:00

Even though it's been a while since I posted this question. I thought I'd post my solution for future purposes.

You can add the "

" syntax within the quotes. As an example I posted the exact code that worked for my situation.

C#

var operationResult = new BO.OperationResult();
         // Physical Location Required
         if (physicalLocationDesc.Trim().Length <= 0)
         {
             operationResult.Successful = false;
             operationResult.Message += " <br /> <br /> A location is required as part of the entry";
         }
         // Type of Connection Desc. Required
         if (typeOfConnectionID.Trim().Length <= 0)
         {
             operationResult.Successful = false;
             operationResult.Message += "<br /> <br />A description for the connection type is required.";
         }
         // Password change frequency desc. required
         if (passwordChangeFrequency.Trim().Length <= 0)
         {
             operationResult.Successful = false;
             operationResult.Message += "<br /><br />Please enter a description for the Password Change Frequency";
         }

I beleive Richards was the closest to my solution but there were differences. thanks for the responses!