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 mm,dd,yyyy).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 sender,EventArgse) { string date1Day= this .txtDate1.Text.Remove(2); string date2Day= this .txtDate2.Text.Remove(2); string date1Month= this .txtDate1.Text.Substring(3,2); string date2Month= this .txtDate2.Text.Substring(3,2); 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(2016,05,02,0,0,0); DateTimedate2= new DateTime(2016,06,02,0,0,0); int result=DateTime.Compare(date1,date2); string relationship; if (result relationship= "isearlierthan" ; else if (result==0) relationship= "isthesametimeas" ; else relationship= "islaterthan" ;

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

Answers (6)