c - How to get sum of the values from List

Question

I want to get sum of the values from list   For example  I have 4 values in list 1 2 3 4 I want to sum these values and display it in Label  Code   protected void btnCalculate Click object sender  EventArgs e        string monday      TextBox txtMonTot      List lt string gt  monTotal   new List lt string gt          if  Application  mondayValues      null                List lt string gt  monValues   Application  mondayValues   as List lt string gt           for  int i   0  i  lt   gridActivity Rows Count - 1  i                          GridViewRow row   gridActivity Rows i               txtMonTot    TextBox row FindControl  txtMon                monday   monValues i               monTotal Add monday                       Any ideas  Thanks in advance

User · Accepted Answer

You can use the Sum function  but you ll have to convert the strings to integers  like so   int total   monValues Sum x   gt  Convert ToInt32 x

User · Answer

Use Sum     List lt string gt  foo   new List lt string gt      foo Add  1     foo Add  2     foo Add  3     foo Add  4      Console Write foo Sum x   gt  Convert ToInt32 x       Prints      10

User · Answer

You can use LINQ for this      var list   new List lt int gt     var sum   list Sum      and for a List of strings like Roy Dictus said you have to convert  list Sum str   gt  Convert ToInt32 str

User · Answer

How about this   List lt string gt  monValues   Application  mondayValues   as List lt string gt   int sum   monValues ConvertAll Convert ToInt32  Sum

[c#] c# - How to get sum of the values from List?

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