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2013-10-04T10:57:05.423
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I done with following code. Model class:- <pre><code> [FormatValidtion("Value", "Format", "MinLength", "MaxLength")] public class Sample { #region ModelProperties public string Id { get; set; } [Required(ErrorMessage = "Please Enter Value")] public string Value { get; set; } public string Format { get; set; } public string MinLength { get; set; } public string MaxLength { get; set; } #endregion } </code></pre> Custom Validation Class:- <pre><code>[AttributeUsage(AttributeTargets.Class)] public class FormatValidtion : ValidationAttribute { public string Value { get; set; } public string Format { get; set; } public string MinLength { get; set; } public string MaxLength { get; set; } public string Format1 { get; set; } public string Value1 { get { return Value; } } public FormatValidtion(String value, String format, String minLength, String maxLength) { Value = value; Format = format; MinLength = minLength; MaxLength = maxLength; } public override Boolean IsValid(Object value) { Type objectType = value.GetType(); PropertyInfo[] neededProperties = objectType.GetProperties() .Where(p => p.Name == Value || p.Name == Format || p.Name == MinLength || p.Name == MaxLength) .ToArray(); if (neededProperties.Count() != 4) { throw new ApplicationException("PropertiesMatchAttribute error on " + objectType.Name); } Boolean isMatched = true; this.Format1 = Convert.ToString(neededProperties[1].GetValue(value, null)); switch (Convert.ToString(neededProperties[1].GetValue(value, null))) { case "Alpha": Regex regExAlpha = new Regex(@"/^[A-Za-z]+$/"); if (!regExAlpha.IsMatch(Convert.ToString(neededProperties[0].GetValue(value, null)))) { isMatched = IsValidLength(Convert.ToString(neededProperties[0].GetValue(value, null)).Length, Convert.ToInt32(neededProperties[2].GetValue(value, null)), Convert.ToInt32(neededProperties[3].GetValue(value, null))); } break; case "Number": Regex regExNumber = new Regex(@"/^[0-9]+$/"); if (!regExNumber.IsMatch(Convert.ToString(neededProperties[0].GetValue(value, null)))) { isMatched = IsValidLength(Convert.ToString(neededProperties[0].GetValue(value, null)).Length, Convert.ToInt32(neededProperties[2].GetValue(value, null)), Convert.ToInt32(neededProperties[3].GetValue(value, null))); } break; case "AlphaNum": Regex regExAlphaNum = new Regex(@"/^[a-zA-Z][a-zA-Z0-9]+$/"); if (!regExAlphaNum.IsMatch(Convert.ToString(neededProperties[0].GetValue(value, null)))) { isMatched = IsValidLength(Convert.ToString(neededProperties[0].GetValue(value, null)).Length, Convert.ToInt32(neededProperties[2].GetValue(value, null)), Convert.ToInt32(neededProperties[3].GetValue(value, null))); } break; default: isMatched = false; break; } return isMatched; } /// range validation public bool IsValidLength(int valueLenght, int minLenght, int maxLenght) { if (valueLenght >= minLenght && valueLenght <= maxLenght) return true; return false; } } </code></pre> Validation Adapter Class:- <pre><code>public class FormatValidtionAdapter : DataAnnotationsModelValidator<FormatValidtion> { public FormatValidtionAdapter(ModelMetadata metadata, ControllerContext context, FormatValidtion attribute) : base(metadata, context, attribute) { } // To Provide Error messages dynamically depends on format. public override IEnumerable<ModelValidationResult> Validate(object container) { string ErrorMessage = null; if (!Attribute.IsValid(Metadata.Model)) { switch (Attribute.Format1) { case "Alpha": ErrorMessage = "Please enter alphabets only"; break; case "Number": ErrorMessage = "Please enter numbers only"; break; case "AlphaNum": ErrorMessage = "Please enter alphanumeric only"; break; default: break; } yield return new ModelValidationResult { Message = ErrorMessage, MemberName = Attribute.Value1 }; } } } </code></pre> Global.aspx.cs:- <pre><code> protected void Application_Start() { AreaRegistration.RegisterAllAreas(); RegisterRoutes(RouteTable.Routes); DataAnnotationsModelValidatorProvider.RegisterAdapter(typeof(FormatValidtion), typeof(FormatValidtionAdapter)); } </code></pre>
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