好吧，这有点复杂。
我有一个复合控件，包含文本框，必填字段验证器和一个按钮。 它暴露了一个名为ValidationGroup的属性。
它将ValidationGroup属性应用于文本框，必填字段验证器和按钮。
一切正常。
当我取出按钮并将其放在具有相同验证组的表单中时，问题就开始了。
理想情况下应该有效。但事实并非如此。 有人说复合控件有自己的命名容器，所以这不起作用。
如果这是真的，我不明白为什么？我的意思是他们有相同的验证组！
无论如何，有谁知道如何解决这个问题？
这是我的代码：
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("<{0}:ValidationTextBox runat=server></{0}:ValidationTextBox>")]
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 > 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("<{0}>{1}</{0}>",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);
}
}
}
答案 0 :(得分：3)
我不知道为什么会发生这种情况的答案，但你可以通过向Control添加一个公共方法来完成这些工作，该方法将其作为bool返回验证，然后在页面中添加CustomValidator并提出类似的内容：
args.IsValid = yourControl.publicMethod()
在其中，我现在无法测试，但我敢打赌它应该可行。
答案 1 :(得分：1)
试试这个：
[ValidationProperty("Text")]
[DefaultProperty("Text")]
[ToolboxData("<{0}:Class1 runat=server></{0}:Class1>")]
public class Class1: CompositeControl
{
private TextBox txtbox = new TextBox();
private RequiredFieldValidator rfv = new RequiredFieldValidator();
public string Text
{
//this will trigger validator inside
get
{
this.rfv.Validate();
return this.txtbox.Text; //you may need too loop each textbox to check if it's empty and return empty string, if so.
}
}
现在按钮会触发复合控件内的验证器。我试过这个并成功了。
答案 2 :(得分：1)
我无法重现这个问题。复合控件执行实现INamingContainer，但这不会影响验证组。您能提供一个小代码示例来帮助我们排除故障吗？
以下代码对我有用：
复合控制
public class RequiredTextBox : CompositeControl
{
private TextBox _textBox = new TextBox { ID = "T" };
private RequiredFieldValidator _validator =
new RequiredFieldValidator { ID = "V", ControlToValidate = "T", ErrorMessage = "*" };
public string Text
{
get { return _textBox.Text; }
set { _textBox.Text = value; }
}
public string ValidationGroup
{
get { return _validator.ValidationGroup; }
set { _validator.ValidationGroup = value; }
}
protected override void CreateChildControls()
{
this.Controls.Add(_textBox);
this.Controls.Add(_validator);
}
}
<强> ASPX
<form id="form1" runat="server">
<asp:ValidationSummary runat="server" ID="ValidationSummary" />
<ctl:RequiredTextBox runat="server" ID="TextBox" ValidationGroup="VG" />
<asp:Button runat="server" ID="SubmitButton" Text="Submit" ValidationGroup="VG" />
</form>