CompareValidator.cs :  » 2.6.4-mono-.net-core » System.Web » System » Web » UI » WebControls » C# / CSharp Open Source

//
// System.Web.UI.WebControls.CompareValidator
//
// Authors:
//  Chris Toshok (toshok@novell.com)
//
// (C) 2005 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//

using System.Globalization;
using System.ComponentModel;
using System.Security.Permissions;

namespace System.Web.UI.WebControls{
  // CAS
  [AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  [AspNetHostingPermission (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  // attributes
#if NET_2_0
  [ToolboxData("<{0}:CompareValidator runat=\"server\" ErrorMessage=\"CompareValidator\"></{0}:CompareValidator>")]
#else
  [ToolboxData("<{0}:CompareValidator runat=server ErrorMessage=\"CompareValidator\"></{0}:CompareValidator>")]
#endif
  public class CompareValidator : BaseCompareValidator
  {
    public CompareValidator ()
    {
    }

    protected override void AddAttributesToRender (HtmlTextWriter w)
    {
      if (RenderUplevel) {
#if NET_2_0
        RegisterExpandoAttribute (ClientID, "evaluationfunction", "CompareValidatorEvaluateIsValid");
        if (ControlToCompare.Length > 0)
          RegisterExpandoAttribute (ClientID, "controltocompare", GetControlRenderID (ControlToCompare));
        if (ValueToCompare.Length > 0)
          RegisterExpandoAttribute (ClientID, "valuetocompare", ValueToCompare, true);
        RegisterExpandoAttribute (ClientID, "operator", Operator.ToString ());
#else
        if (ControlToCompare != "")
          w.AddAttribute ("controltocompare", GetControlRenderID(ControlToCompare));
        if (ValueToCompare != "")
          w.AddAttribute ("valuetocompare", ValueToCompare);
        w.AddAttribute ("operator", Operator.ToString());
        w.AddAttribute ("evaluationfunction", "CompareValidatorEvaluateIsValid", false);
#endif
      }

      base.AddAttributesToRender (w);
    }

    protected override bool ControlPropertiesValid ()
    {
      if ((this.Operator != ValidationCompareOperator.DataTypeCheck) && ControlToCompare.Length == 0 &&
          !BaseCompareValidator.CanConvert (this.ValueToCompare, this.Type, this.CultureInvariantValues))
      {
        throw new HttpException(
          String.Format("Unable to convert the value: {0} as a {1}", ValueToCompare,
                  Enum.GetName(typeof(ValidationDataType), this.Type)));
      }

      if (ControlToCompare.Length > 0) {
        if (string.CompareOrdinal (ControlToCompare, ControlToValidate) == 0)
          throw new HttpException (String.Format ("Control '{0}' cannot have the same value '{1}' for both ControlToValidate and ControlToCompare.", ID, ControlToCompare));
        CheckControlValidationProperty (ControlToCompare, "");
      }
      
      return base.ControlPropertiesValid ();
    }

    protected override bool EvaluateIsValid ()
    {
      string control_value;

      control_value = GetControlValidationValue (this.ControlToValidate);
      if (control_value == null)
        return true;
      control_value = control_value.Trim ();
      if (control_value.Length == 0)
        return true;

      string compare;
      /* ControlToCompare takes precendence, if it's set. */
      compare = (ControlToCompare != "" ? GetControlValidationValue (ControlToCompare) : ValueToCompare);

      return BaseCompareValidator.Compare (GetControlValidationValue (ControlToValidate), false, 
                   compare, this.CultureInvariantValues,
                   Operator, this.Type);
    }

    [DefaultValue("")]
    [TypeConverter(typeof(System.Web.UI.WebControls.ValidatedControlConverter))]
    [WebSysDescription ("")]
    [WebCategory ("Behavior")]
#if NET_2_0
    [Themeable (false)]
#endif
    public string ControlToCompare {
      get { return ViewState.GetString ("ControlToCompare", String.Empty); }
      set { ViewState["ControlToCompare"] = value; }
    }

    [DefaultValue(ValidationCompareOperator.Equal)]
    [WebSysDescription ("")]
    [WebCategory ("Behavior")]
#if NET_2_0
    [Themeable (false)]
#endif
    public ValidationCompareOperator Operator {
      get { return (ValidationCompareOperator)ViewState.GetInt ("Operator", (int)ValidationCompareOperator.Equal); }
      set { ViewState ["Operator"] = (int)value; }
    }

#if !NET_2_0
    [Bindable(true)]
#endif
    [DefaultValue("")]
    [WebSysDescription ("")]
    [WebCategory ("Behavior")]
#if NET_2_0
    [Themeable (false)]
#endif
    public string ValueToCompare {
      get { return ViewState.GetString ("ValueToCompare", String.Empty); }
      set { ViewState ["ValueToCompare"] = value; }
    }
  }
}