How To Compare Two dates in ASP.Net c#?

Question

I have two text boxes.i enter into textboxes date in this format (Ex:05/02/2016 mmddyyyy).I want to compare two dates(start date end date)validation how to do this.in asp.net c#. :)

Suresh M · Answer

cmpVal1 ControlToCompare= txtStartDate ControlToValidate= txtEndDate Type= Date Operator= GreaterThanEqual ErrorMessage= *InvalidData runat= server >

Raja · Answer

Thank You sir

Suresh M · Answer

For alert message write the below code. string message= Hello!Message. ; System.Text.StringBuildersb= new System.Text.StringBuilder(); sb.Append(   ); sb.Append( window.onload=function(){ ); sb.Append( alert(' ); sb.Append(message); sb.Append( ')}; ); sb.Append(   ); ClientScript.RegisterClientScriptBlock( this .GetType() alert sb.ToString());

Shakti Singh Dulawat · Answer

div > table border = 0 cellpadding = 0 cellspacing = 0 > tr > th > Date1 th > th > Date2 th > tr > tr > td > asp:TextBox ID = txtDate1 runat = server /> td > td > asp:TextBox ID = txtDate2 runat = server /> td > tr > table > asp:Button ID = btnCalculateDate runat = server OnClick = CalculateDate Text = CalculateDate /> div > protected void CalculateDate( object senderEventArgse) { string date1Day= this .txtDate1.Text.Remove(2); string date2Day= this .txtDate2.Text.Remove(2); string date1Month= this .txtDate1.Text.Substring(32); string date2Month= this .txtDate2.Text.Substring(32); string date1Year= this .txtDate1.Text.Substring(6); string date2Year= this .txtDate2.Text.Substring(6); DateTimed1=Convert.ToDateTime(date1Month+ / +date1Day+ / +date1Year); DateTimed2=Convert.ToDateTime(date2Month+ / +date2Day+ / +date2Year); if (d1>d2) { ClientScript.RegisterStartupScript( this .GetType() Alert  alert('Date1isgreater')  true ); } else if (d1==d2) { ClientScript.RegisterStartupScript( this .GetType() Alert  alert('Botharesame')  true ); } else { ClientScript.RegisterStartupScript( this .GetType() Alert  alert('Date2isgreater')  true ); } }

Raja · Answer

Thank You Suresh Sir How show the Alert message in Pop-up Window.

Manas Mohapatra · Answer

Try with below code: DateTimedate1= new DateTime(20160502000); DateTimedate2= new DateTime(20160602000); int result=DateTime.Compare(date1date2); string relationship; if (result relationship= isearlierthan ; else if (result==0) relationship= isthesametimeas ; else relationship= islaterthan ;