Combine funtionality of Requirefield Validator and Compare Validator

public static bool IsInteger(object numericValue)
        {
            if (numericValue == null)
            {
                return false;
            }
            else
            {
                int result;

                return int.TryParse(numericValue.ToString(),
                    System.Globalization.NumberStyles.Integer,
                    System.Globalization.NumberFormatInfo.CurrentInfo,
                    out result);
            }
        }
if(String.IsNullOrEmty(txtBox.Text) || IsInteger(txtBox.Text))
{
}

Can i do this using validators??

check String.IsNullOrEmty(txtBox.Text) || IsInteger(txtBox.Text) using validator.

This is what am doing at the moment,

<asp:textbox id="tbAddAmount" runat="server" cssclass="editbox" columns="10" maxlength="20" />

<asp:requiredfieldvalidator id="rfvAmount" runat="server" text="*" errormessage="Enter valid Amount"  controltovalidate="tbAddAmount" Display="Dynamic" validationgroup="vgLumpSum" />

<asp:comparevalidator  id="cvAmount" runat="server" text="*" operator="DataTypeCheck" type="Integer" errormessage="Enter valid Amount"  controltovalidate="tbAddAmount" Display="Dynamic" validationgroup="vgLumpSum" />

@virtualmenon is it working ???

function customvalidate(sender, args)
        {
            if(document.getElementById('txtnum').value != "")
            {
                if(isNumeric(document.getElementById('txtnum').value) == false)
                {
                    args.IsValid = false;
                    return;
                }
            }      
            else
            {
                 args.IsValid = false;
                 return;
            }
            
          args.IsValid = true;
        }

function isNumeric(strValidate)
    {
        var blnResult = true;
        var strNumber = new String(strValidate);
        var i;
        for(i=0;i<strNumber.length;i++)
        {
            //alert(isNaN(strNumber.substr(i,1));
            if(isNaN(strNumber.substr(i,1)))
            {
                blnResult = false;
            }
        }        
        return blnResult;
    }

<asp:CustomValidator ID="CustomValidator2" runat="server" ClientValidationFunction="customvalidate" ControlToValidate="txtnum" ErrorMessage="Invalid Number.">*</asp:CustomValidator>

@vora_bhaumik: Its working but i would prefer a custom validator doing both.

Hi Virtualmenon:

I have given you t he same solution and that too using the custom validator. Anyways hope you got your answer.