how to check multiple string value are empty or not at one go ?

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Hii,
I have around 15 string values .. n for each i wanted to check wether they are empty or not if they are empty then i want to display an error that this string is empty .. but for each of this i am checking isnullor empty and returning an error message ... do you any way in which we can check all values at one go insted of checking each all time

Posted 1-Aug-13 20:54pm

Torakami

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Dholakiya Ankit 2-Aug-13 2:55am

use array..

3 solutions

Solution 2

If your data comes from database, compare it to DBNull.Value[^]

Posted 1-Aug-13 21:23pm

Maciej Los

Solution 3

Quote:
The following example examines three strings and determines whether each string has a value, is an empty string, or is null.

Code Sample

C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {

            string s1 = "abcd";
            string s2 = "";
            string s3 = null;

            Console.WriteLine("String s1 {0}.", Test(s1));
            Console.WriteLine("String s2 {0}.", Test(s2));
            Console.WriteLine("String s3 {0}.", Test(s3));
            Console.ReadLine();
        }

        public static String Test(string s)
        {
            if (String.IsNullOrEmpty(s))
                return "is null or empty";
            else
                return String.Format("(\"{0}\") is neither null nor empty", s);
        }
        }
    }

Posted 1-Aug-13 21:36pm

Manish (Mack)

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Harshil_Raval · Accepted Answer · 2013-08-01T21:02:00

Hi,

Add your all string value in List<string> .

say for example,
List<string> s = new List<string>();

s.add(your string value);
up to n time, you can do it in for loop.

Then check like this,

SQL

List<string> s1 = (from a in s
                    where string.IsNullOrEmpty(a)
                    select a.ToString()).ToList();

Check s1.Count(). If > 0 means you have string with blank value.