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

Raja

10y7.7k.NET

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#. :)

6 Replies

Know the answer? Post it — somebody with the same question will find it here.

Suresh M10y ago
Accepted answer
1. "cmpVal1"ControlToCompare="txtStartDate"
2. ControlToValidate="txtEndDate"Type="Date"Operator="GreaterThanEqual"
3. ErrorMessage="*InvalidData"runat="server">

Raja10y ago

Thank You sir

Suresh M10y ago

For alert message write the below code.

stringmessage="Hello!Message.";
System.Text.StringBuildersb=newSystem.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 Dulawat10y ago

<div>
<tableborder="0"cellpadding="0"cellspacing="0">
<tr>
<th>
Date1
th>
<th>
Date2
th>
tr>
<tr>
<td>
<asp:TextBoxID="txtDate1"runat="server"/>
td>
<td>
<asp:TextBoxID="txtDate2"runat="server"/>
td>
tr>
table>
<asp:ButtonID="btnCalculateDate"runat="server"OnClick="CalculateDate"Text="CalculateDate"/>
div>

protectedvoidCalculateDate(objectsender,EventArgse)
{
stringdate1Day=this.txtDate1.Text.Remove(2);
stringdate2Day=this.txtDate2.Text.Remove(2);
stringdate1Month=this.txtDate1.Text.Substring(3,2);
stringdate2Month=this.txtDate2.Text.Substring(3,2);
stringdate1Year=this.txtDate1.Text.Substring(6);
stringdate2Year=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);
}
elseif(d1==d2)
{
ClientScript.RegisterStartupScript(this.GetType(),"Alert","alert('Botharesame')",true);
}
else
{
ClientScript.RegisterStartupScript(this.GetType(),"Alert","alert('Date2isgreater')",true);
}
}

Raja10y ago

Thank You Suresh Sir,

How show the Alert message in Pop-up Window.

Manas Mohapatra10y ago

Try with below code:

DateTimedate1=newDateTime(2016,05,02,0,0,0);
DateTimedate2=newDateTime(2016,06,02,0,0,0);
intresult=DateTime.Compare(date1,date2);
stringrelationship;
if(result<0)
relationship="isearlierthan";
elseif(result==0)
relationship="isthesametimeas";
else
relationship="islaterthan";