c# - Sequencing ASP.NET custom validators and difference between Validator's Text and ErrorMessage properties -

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i have textbox 2 validators. first validator checks if textbox empty or not. second validator checks value of textbox contains spaces or not. when run project , try validate without text in textbox, shows both validators' error messages. want should not execute second validator until first validator validated successfully. 

<asp:customvalidator id="customvalidator1" runat="server" controltovalidate="textbox3" errormessage="please enter value." font-names="segoe ui" onservervalidate="customvalidator1_servervalidate" setfocusonerror="true"></asp:customvalidator> <br /> <asp:customvalidator id="customvalidator2" runat="server" controltovalidate="textbox3" errormessage="spaces not allowed." font-names="segoe ui" onservervalidate="customvalidator2_servervalidate" setfocusonerror="true"></asp:customvalidator> <br />

so questions are:

how can sequence validations 1 validation should called after other validated successfully?

another question want ask difference between validator's text , errormessage properties?

you should use requiredfieldvalidator empty text, , customvalidator check out string composition.

<asp:requiredfieldvalidator   id="requiredfieldvalidator1"  controltovalidate="textbox3"    runat="server"       errormessage="please enter value."> </asp:requiredfieldvalidator> <br /> <asp:customvalidator   id="customvalidator2"   runat="server"   controltovalidate="textbox3"   errormessage="spaces not allowed."   font-names="segoe ui"   onservervalidate="customvalidator2_servervalidate" setfocusonerror="true"> </asp:customvalidator> <br />

the errormessage msdn:

gets or sets text error message displayed in validationsummary control when validation fails.

the text msdn:

gets or sets text displayed in validation control when validation fails. (overrides label.text.)

edit:

given doing multiple validations, should use single customvalidator this. in server side, should check both, empty , string composition, this:

protected void customvalidator1_servervalidate(object source, servervalidateeventargs args) {   if (string.isnullorempty(args.value))   {     args.isvalid = false;     ((customvalidator)source).text = "please enter value.";   }   else if (/*check if has empty space*/)   {     args.isvalid = false;     ((customvalidator)source).text = "spaces not allowed.";   }   else   {     args.isvalid = true;   } }

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