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POhow to validate composite controls
 

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  1. POhow to validate composite controls
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    <p>Alright, this is a little bit complicated.</p> <p>I have a composite control that contains textbox, required field validator and a button. It is exposing a property called ValidationGroup.</p> <p>It applies the ValidationGroup property to textbox , required field validator and the button.</p> <p>Everything works fine.</p> <p>The problem begins when I take out the button and place it out in the form with the same validation group.</p> <p>Ideally it should have worked. But it doesn't. Some say that composite controls have their own naming container and so this will not work.</p> <p>If that is true, I don't understand why ? I mean they have the same validation group!</p> <p>anyways, does anyone know how to fix this ?</p> <p>here's my code :</p> <pre><code>using System; using System.Collections.Generic; using System.ComponentModel; using System.Linq; using System.Security.Permissions; using System.Text; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; using FCC.Web.UI.CustomControl; using System.Xml; namespace FCC.Web.UI.CustomControl { [AspNetHostingPermission(SecurityAction.Demand, Level = AspNetHostingPermissionLevel.Minimal)] [AspNetHostingPermission(SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)] [DefaultProperty("Value")] [ValidationProperty("Value")] [ToolboxData("&lt;{0}:ValidationTextBox runat=server&gt;&lt;/{0}:ValidationTextBox&gt;")] public class ValidationTextBox : CompositeControl, IDynamicControl { #region-- privatess -- private TextBox textBox1; private RequiredFieldValidator requiredFieldValidator1; private RegularExpressionValidator regularExpressionValidator1, maxlengthValidator,integerValidator,decimalValidator; private string validationClasses, validationGroup, validationExpression, xmlElementName; private bool isRequired; private int maxlength; #endregion #region-- properties -- The following properties are deleted to child controls #region-- textbox -- [Bindable(true)] [Category("Appearance")] [DefaultValue("")] [Localizable(true)] [Description("Text displayed on the textbox")] public string Value { get { EnsureChildControls(); return textBox1.Text; } set { EnsureChildControls(); textBox1.Text = value; } } [Bindable(true)] [Category("Styles")] [Themeable(true)] [DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Content)] [PersistenceMode(PersistenceMode.InnerProperty)] [Localizable(true)] public Style TextBoxStyle { get { EnsureChildControls(); return textBox1.ControlStyle; } set { EnsureChildControls(); //textBox1.Attributes["style"] = value; textBox1.ControlStyle.MergeWith(value); } } [Bindable(true)] [Category("Styles")] [Localizable(true)] public string TextBoxCssClass { get { EnsureChildControls(); return textBox1.CssClass; } set { EnsureChildControls(); textBox1.CssClass = value; } } [Bindable(true)] [Category("Appearance")] [DefaultValue("")] [Localizable(true)] public TextBoxMode TextMode { get { EnsureChildControls(); return textBox1.TextMode; } set { EnsureChildControls(); textBox1.TextMode = value; } } [Bindable(true)] [Category("Default")] [DefaultValue("")] [Localizable(true)] public int MaxLength { get { EnsureChildControls(); return maxlength; } set { EnsureChildControls(); if (value &gt; 0) { maxlength = value; textBox1.MaxLength = value; maxlengthValidator.Enabled = true; //maxlengthValidator.ValidationExpression = "^[a-zA-Z.]{0," + value + "}$"; maxlengthValidator.ValidationExpression = @"^[\s\S]{0," + value + "}$"; maxlengthValidator.ErrorMessage = "Maximum allowed charaters: " + value; } } } [Bindable(true)] [Category("Default")] [DefaultValue("")] [Localizable(true)] public bool IsInteger { get { EnsureChildControls(); return integerValidator.Enabled; } set { EnsureChildControls(); if (value == true) // Is Integer { integerValidator.Enabled = true; regularExpressionValidator1.Enabled = false; maxlengthValidator.Enabled = false; decimalValidator.Enabled = false; } else { integerValidator.Enabled = false; } } } [Bindable(true)] [Category("Default")] [DefaultValue("")] [Localizable(true)] [Description("Error message that appears when textbox contain invalid integer")] public string InvalidIntegerErrorMessage { get { EnsureChildControls(); return integerValidator.ErrorMessage.IsNullOrEmpty() ? "Invalid Number" : integerValidator.ErrorMessage; } set { EnsureChildControls(); integerValidator.ErrorMessage = value; } } [Bindable(true)] [Category("Default")] [DefaultValue("")] [Localizable(true)] public bool IsDecimal { get { EnsureChildControls(); return decimalValidator.Enabled; } set { EnsureChildControls(); if (value == true) { decimalValidator.Enabled = true; integerValidator.Enabled = false; regularExpressionValidator1.Enabled = false; maxlengthValidator.Enabled = false; } else { decimalValidator.Enabled = false; } } } [Bindable(true)] [Category("Default")] [DefaultValue("")] [Localizable(true)] [Description("Error message that appears when textbox contain invalid decimal number")] public string InvalidDecimalErrorMessage { get { EnsureChildControls(); return decimalValidator.ErrorMessage.IsNullOrEmpty() ? "Invalid Number" : decimalValidator.ErrorMessage; } set { EnsureChildControls(); decimalValidator.ErrorMessage = value; } } [Bindable(true)] [Category("Default")] [DefaultValue("")] [Localizable(true)] [Description("Name of XmlElement")] public string XmlElementName { get { EnsureChildControls(); return xmlElementName; } set { EnsureChildControls(); xmlElementName = value; } } [Bindable(true)] [Category("Default")] [DefaultValue("")] [Localizable(true)] public string XmlElements { get { EnsureChildControls(); return string.Format("&lt;{0}&gt;{1}&lt;/{0}&gt;",XmlElementName,textBox1.Text); } } #endregion #region--required validation -- [Bindable(true)] [Category("Appearance")] [DefaultValue("")] [Localizable(true)] [Description("Error message that appears when text box is empty")] public String RequiredErrorMessage { get { EnsureChildControls(); return requiredFieldValidator1.ErrorMessage.IsNullOrEmpty() ? "Required Field" : requiredFieldValidator1.ErrorMessage; } set { EnsureChildControls(); requiredFieldValidator1.ErrorMessage = value; } } [Bindable(true)] [Category("Default")] [Localizable(true)] [Description("bool, representing text in the textbox is required field or not")] public bool IsRequired { get { EnsureChildControls(); return isRequired; } set { EnsureChildControls(); isRequired = value; requiredFieldValidator1.Enabled = value; } } #endregion #region-- regular expression validation -- [Bindable(true)] [Category("Appearance")] [DefaultValue("")] [Localizable(true)] [Description("Error message that appears when textbox contain invalid format string")] public String RegularExpressionErrorMessage { get { EnsureChildControls(); return regularExpressionValidator1.ErrorMessage.IsNullOrEmpty() ? "Invalid Text" : regularExpressionValidator1.ErrorMessage; } set { EnsureChildControls(); regularExpressionValidator1.ErrorMessage = value; } } [Bindable(true)] [Category("Default")] [DefaultValue("")] [Localizable(true)] [Description("Regular expression. Leave blank if you dont want to implement.")] public string RegularExpression { get { EnsureChildControls(); return validationExpression; } set { EnsureChildControls(); validationExpression = value; regularExpressionValidator1.ValidationExpression = value; regularExpressionValidator1.Enabled = true; integerValidator.Enabled = false; decimalValidator.Enabled = false; } } #endregion #region--common-- [Bindable(true)] [Category("Default")] [DefaultValue("")] [Localizable(true)] [Description("cssClasses that apply to all validators")] public string ValidationErrorCssClass { get { EnsureChildControls(); return validationClasses; } set { EnsureChildControls(); validationClasses = value; requiredFieldValidator1.CssClass = value; regularExpressionValidator1.CssClass = value; maxlengthValidator.CssClass = value; } } [Bindable(true)] [Category("Default")] [DefaultValue("")] [Localizable(true)] [Description("Validation group for the textbox and inbuilt validations")] public string ValidationGroup { get { EnsureChildControls(); return validationGroup; } set { EnsureChildControls(); validationGroup = value; requiredFieldValidator1.ValidationGroup = value; regularExpressionValidator1.ValidationGroup = value; maxlengthValidator.ValidationGroup = value; textBox1.ValidationGroup = value; } } #endregion #endregion #region -- blank properties-- public string EmptyText { get; set; } public string CommaSeparatedData { set; get; } public bool ShowDefaultItem { get; set; } public string DropDownCssClass { get; set; } #endregion protected override void RecreateChildControls() { EnsureChildControls(); } protected override void CreateChildControls() { Controls.Clear(); #region--textbox-- textBox1 = new TextBox(); textBox1.ID = "textbox1"; //textBox1.CssClass = TextBoxClass; textBox1.Style[HtmlTextWriterStyle.VerticalAlign] = "middle"; //if (!validationGroup.IsNullOrEmpty()) //{ // textBox1.ValidationGroup = validationGroup; //} #endregion #region--required field validator-- requiredFieldValidator1 = new RequiredFieldValidator(); requiredFieldValidator1.ID = "validator1"; requiredFieldValidator1.ErrorMessage = RequiredErrorMessage; requiredFieldValidator1.CssClass = validationClasses; requiredFieldValidator1.Display = ValidatorDisplay.Dynamic; requiredFieldValidator1.ControlToValidate = textBox1.ID; requiredFieldValidator1.Enabled = false; requiredFieldValidator1.SetFocusOnError = true; //if (isRequired) //{ // requiredFieldValidator1.Enabled = true; //} //if (!validationGroup.IsNullOrEmpty()) //{ // requiredFieldValidator1.ValidationGroup = validationGroup; //} #endregion #region-- regular expression validator-- regularExpressionValidator1 = new RegularExpressionValidator(); regularExpressionValidator1.ID = "validator2"; regularExpressionValidator1.Enabled = false; regularExpressionValidator1.ErrorMessage = RegularExpressionErrorMessage; regularExpressionValidator1.CssClass = validationClasses; regularExpressionValidator1.Display = ValidatorDisplay.Dynamic; regularExpressionValidator1.ControlToValidate = textBox1.ID; regularExpressionValidator1.SetFocusOnError = true; //if (!validationGroup.IsNullOrEmpty()) //{ // regularExpressionValidator1.ValidationGroup = validationGroup; //} #endregion #region -- maxlength validation -- maxlengthValidator = new RegularExpressionValidator(); maxlengthValidator.ControlToValidate = textBox1.ID; maxlengthValidator.ID = "validator3"; maxlengthValidator.Enabled = false; maxlengthValidator.CssClass = validationClasses; maxlengthValidator.Display = ValidatorDisplay.Dynamic; maxlengthValidator.SetFocusOnError = true; //if (!validationGroup.IsNullOrEmpty()) //{ // maxlengthValidator.ValidationGroup = validationGroup; //} #endregion #region--integer Validation-- integerValidator = new RegularExpressionValidator(); integerValidator.ID = "integervalidator"; integerValidator.Enabled = false; integerValidator.ErrorMessage = InvalidIntegerErrorMessage; integerValidator.CssClass = validationClasses; integerValidator.Display = ValidatorDisplay.Dynamic; integerValidator.ControlToValidate = textBox1.ID; integerValidator.SetFocusOnError = true; integerValidator.ValidationExpression=@"^\d+$"; #endregion #region -- decimal validation-- decimalValidator = new RegularExpressionValidator(); decimalValidator.ID = "decimalvalidator"; decimalValidator.Enabled = false; decimalValidator.ErrorMessage = InvalidDecimalErrorMessage; decimalValidator.CssClass = validationClasses; decimalValidator.Display = ValidatorDisplay.Dynamic; decimalValidator.ControlToValidate = textBox1.ID; decimalValidator.SetFocusOnError = true; decimalValidator.ValidationExpression = @"(^\d*\.?\d*[1-9]+\d*$)|(^[1-9]+\d*\.\d*$)"; #endregion this.Controls.Add(textBox1); this.Controls.Add(requiredFieldValidator1); this.Controls.Add(regularExpressionValidator1); this.Controls.Add(maxlengthValidator); this.Controls.Add(integerValidator); this.Controls.Add(decimalValidator); } protected override void OnLoad(EventArgs e) { EnsureChildControls(); base.OnLoad(e); } protected override void Render(HtmlTextWriter writer) { AddAttributesToRender(writer); textBox1.RenderControl(writer); requiredFieldValidator1.RenderControl(writer); regularExpressionValidator1.RenderControl(writer); maxlengthValidator.RenderControl(writer); integerValidator.RenderControl(writer); decimalValidator.RenderControl(writer); } } } </code></pre>
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    1. CO> "Ideally it should have worked. But it doesn't." What do you mean by that?
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      1. USn.podbielski
 

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