Switch inside nested Foreach loops. how to get out on certain condtion.

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Hello i have a situation where i am stuck

i have a switch case inside two nested for each loops. i want to get out of the inner loop if switch case is true.

C#

foreach(DataRow dr in dt.Rows)
  {
      foreach (DataColumn dc in dt.Columns) 
       {
           switch (dc.Ordinal)
                  {
                     case 0:
                           {
                            if( string.IsNullOrEmpty(dr[dc].ToString()))
                               {
                                 continue;
                               }  
                           }
                   }
       }
  }

What i need to do is if the switch case is true then i need to getout of the DataColumn loop and go to dataRow loop. But continue just takes me to dc loop again.

Posted 17-Sep-15 21:50pm

Riya-Pandey

Updated 17-Sep-15 22:12pm

Naveen.Sanagasetti

v3

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Comments

Krunal Rohit 18-Sep-15 4:05am

Use break instead.
Or set a boolean flag and based on your condition set it to true and at the end of the inner loop check it for flag, if its true, break it.

-KR

CPallini 18-Sep-15 4:08am

My (virtual) 5.

2 solutions

Solution 2

Hi,

use below sample

C#

bool isExists=false;
foreach(DataRow dr in dt.Rows)
  {
      foreach (DataColumn dc in dt.Columns)
       {
           switch (dc.Ordinal)
                  {
                     case 0:
                           {
                            if( string.IsNullOrEmpty(dr[dc].ToString()))
                               {
                                   isExists=true;
                                   break;
                               }
                           }
                   }
       }
  }

Continue, statement will continue the next statement, instead of that better to use break; it's breaks the current looping and give you the result set.

Posted 17-Sep-15 22:20pm

Naveen.Sanagasetti

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DamithSL · Accepted Answer · 2015-09-17T22:07:00

C#

bool exitLoop;
foreach(DataRow dr in dt.Rows)
{
    foreach (DataColumn dc in dt.Columns)
     {
         switch (dc.Ordinal)
                {
                   case 0:
                         {
                          if( string.IsNullOrEmpty(dr[dc].ToString()))
                             {
                               exitLoop = true;
                               break;
                             }
                         }
                 }
           if (exitLoop) break;
           
     }
   
}