How do you compare the size of two dates in C # code?

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Methods for comparing two date sizes in C #

       /// <summary>        ///comparison of two date sizes/// </summary>        /// <param name= "DATESTR1" >Date 1</param>        /// <param name= "DATESTR2" >Date 2</param>        /// <param name= "MSG" >return information</param>         Public voidCompanydate (stringDATESTR1,stringDATESTR2,ref stringmsg) {            //Convert a date string to a Date objectDateTime T1 =Convert.todatetime (DATESTR1); DateTime T2=Convert.todatetime (DATESTR2); //Compare by Datetime.compare ( ) ()            intCompnum =datetime.compare (t1, T2); //t1> T2            if(Compnum >0) {msg="T1: ("+ DATESTR1 +") is greater than"+"T2 ("+ DATESTR2 +")"; }            //t1= T2            if(Compnum = =0) {msg="T1: ("+ DATESTR1 +") equals"+"T2 ("+ DATESTR2 +")"; }            //t1< T2            if(Compnum <0) {msg="T1: ("+ DATESTR1 +") is less than"+"T2 ("+ DATESTR2 +")"; }        }

Code to invoke

         PublicActionResult Index () {//t1< T2            stringMSG1 =string.            Empty; stringDate1 ="2018-07-25"; stringDate2 ="2018-07-27"; Companydate (Date1,date2,refMSG1); //t1> T2            stringMSG2 =string.            Empty; stringDate3 ="2018-07-27"; stringDate4 ="2018-07-25"; Companydate (Date3, Date4,refMSG2); returnView (); }

Overall demo Source

  Public classTestcontroller:controller {//get:test         PublicActionResult Index () {//t1< T2            stringMSG1 =string.            Empty; stringDate1 ="2018-07-25"; stringDate2 ="2018-07-27"; Companydate (Date1,date2,refMSG1); //t1> T2            stringMSG2 =string.            Empty; stringDate3 ="2018-07-27"; stringDate4 ="2018-07-25"; Companydate (Date3, Date4,refMSG2); returnView (); }        /// <summary>        ///comparison of two date sizes/// </summary>        /// <param name= "DATESTR1" >Date 1</param>        /// <param name= "DATESTR2" >Date 2</param>        /// <param name= "MSG" >return information</param>         Public voidCompanydate (stringDATESTR1,stringDATESTR2,ref stringmsg) {            //Convert a date string to a Date objectDateTime T1 =Convert.todatetime (DATESTR1); DateTime T2=Convert.todatetime (DATESTR2); //Compare by Datetime.compare ( ) ()            intCompnum =datetime.compare (t1, T2); //t1> T2            if(Compnum >0) {msg="T1: ("+ DATESTR1 +") is greater than"+"T2 ("+ DATESTR2 +")"; }            //t1= T2            if(Compnum = =0) {msg="T1: ("+ DATESTR1 +") equals"+"T2 ("+ DATESTR2 +")"; }            //t1< T2            if(Compnum <0) {msg="T1: ("+ DATESTR1 +") is less than"+"T2 ("+ DATESTR2 +")"; }        }    }

Specific:

1) Figure 1

2) Figure 2

How do you compare the size of two dates in C # code?