关于自定义控件的验证问题!(先100分奉上,如果能解决者,300分都没有问题)

Question

我也不清楚，是不是要公开TEXT属性
帮你up

Answer 1

text属性已经公开了的阿。public override string text/  ，那么平时你们自己写的控件
是怎么验证的阿？

Answer 2

要对输入控件进行验证，必须将 System.Web.UI.ValidationPropertyAttribute 应用于该控件

Answer 3

在程序头using那个控件的命名空间，还有那个控件所用到的空间
就是和楼上的差不多

Answer 4

System.Web.UI.ValidationPropertyAttribute

Answer 5

我不知道你的服务器控件是使用HtmlTextWriter还是CreateControl写出来的。
如果是HtmlTextWriter写的，客户端验证你还是自己写js代码验证吧，没办法使用asp.net自带的验证控件。

Answer 6

下面是我把人家的一个控件修改过后的源代码（增加了数据绑顶和css绑顶）.using System;
using System.Collections;
using System.Collections.Specialized;
using System.ComponentModel;
using System.IO;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;namespace Commbox
{
/// <summary>
/// WebCustomControl1 的摘要说明。
/// </summary>
[
DefaultEvent("TextChanged"),
DefaultProperty("Text"),
]
//public class ComboBox:WebControl, INamingContainer,IPostBackDataHandler
public class ComboBox:TextBox
{

ListBox lb;  
//public ComboBox():base(HtmlTextWriterTag.Input)
public ComboBox()
{
lb=new ListBox();
lb.Style["position"]="absolute";
lb.Style["display"]="none";
lb.Style["filter"]="progid:DXImageTransform.Microsoft.dropshadow(OffX=2, OffY=2, Color='gray', Positive='true')";
lb.EnableViewState=true;
Controls.Add(lb);
}

[
PersistenceMode(PersistenceMode.InnerProperty),
DesignerSerializationVisibility(DesignerSerializationVisibility.Content),
]
public  ListItemCollection Items
{
get
{
return  lb.Items;
}

} [
DefaultValue(null),
]
public  object DataSource
{
get
{
 return  lb.DataSource;
}
set
{
               if(value!=null)
               lb.DataSource=value;
}     }
[
DefaultValue(""),
]
public  string  DataMember
{
get
{
return  lb.DataMember;

}
set
{
lb.DataMember=value;
} } [
DefaultValue(""),
] public  string  DataTextField
{
get
{  
return lb.DataTextField;
}
set
{
lb.DataTextField=value;

}
}
[
DefaultValue(""),
]
public  string  DataValueField
{
get
{  
return lb.DataValueField;
}
set
{
lb.DataValueField=value;

}
} [
DefaultValue(""),
]
public  string  DataTextFormatString
{
get
{  
return lb.DataTextFormatString;

}
set
{
lb.DataTextFormatString=value;
} } protected new void OnDataBinding(EventArgs e)
{
  lb.DataBind();
          
}
[
DefaultValue(false),
]
public new bool AutoPostBack
{
get
{
return ViewState["AutoPostBack"]==null?false:true;
}
set
{
if(value)
ViewState["AutoPostBack"]=0;
else
ViewState.Remove("AutoPostBack");
}
}
[
DefaultValue(""),
]
public override string Text
{
get
{
return Convert.ToString(ViewState["Text"]);
}
set
{
ViewState["Text"]=value;
}
}
[
DefaultValue(""),
]
public  string  ComBoxCssClass
{
get
{
return lb.CssClass;
}
set
{

lb.CssClass=value;

}
} [
DefaultValue(0),
]
public override int MaxLength
{
get
{
object o=ViewState["MaxLength"];
return o==null?0:(int)o;
}
set
{
ViewState["MaxLength"]=value;
}
} static private string _scriptBlock;
static protected string ScriptBlock
{
get
{
if(_scriptBlock==null)
{
using(Stream s=typeof(ComboBox).Assembly.GetManifestResourceStream(typeof(ComboBox).FullName+".js"))
{
using(StreamReader sr=new StreamReader(s))
{
_scriptBlock="<script language=jscript>"+sr.ReadToEnd()+"</script>";
}
}
}
return _scriptBlock;
}
}
protected override void OnPreRender(System.EventArgs e)
{
base.OnPreRender(e); Page.RegisterStartupScript(this.UniqueID,"<script>LostinetSampleComboBox_Init('"+this.UniqueID+"','"+lb.UniqueID+"');</script>");

string key=typeof(ComboBox).FullName;
if(!Page.IsClientScriptBlockRegistered(key))
{
Page.RegisterClientScriptBlock(key,ScriptBlock);
}
} protected override void AddAttributesToRender(System.Web.UI.HtmlTextWriter writer)
{
base.AddAttributesToRender(writer);
writer.AddAttribute(HtmlTextWriterAttribute.Name,this.UniqueID);
writer.AddAttribute(HtmlTextWriterAttribute.Value,this.Text,true);
writer.AddAttribute("AutoComplete","Off");
if(MaxLength>0)
writer.AddAttribute(HtmlTextWriterAttribute.Maxlength,MaxLength.ToString(),false);
if(this.AutoPostBack)
writer.AddAttribute(HtmlTextWriterAttribute.Onchange,Page.GetPostBackEventReference(this),false);
} public void RaisePostDataChangedEvent()
{
OnTextChanged(EventArgs.Empty);
} public bool LoadPostData(string postDataKey, System.Collections.Specialized.NameValueCollection postCollection)
{
string v=postCollection[postDataKey];
if(v==Text)
return false;
Text=v;
return true;
}
        
/*  //新得系统
public  new event EventHandler TextChanged; protected  new  void OnTextChanged(EventArgs e)
{
if(TextChanged!=null)
TextChanged(this,e);
}
*/ /*
protected override void LoadViewState(object savedState)
{
Pair p=(Pair)savedState;
base.LoadViewState(p.First);
//((IStateManager)lb.Items).LoadViewState(p.Second); } protected override object SaveViewState()
{

//return new Pair(base.SaveViewState(),((IStateManager)lb.Items).SaveViewState());
return new Pair(base.SaveViewState(),null);

} protected override void TrackViewState()
{
base.TrackViewState();
//((IStateManager)lb.Items).TrackViewState();
}
*/
}}

Answer 7

<DefaultProperty("Text"), DefaultEvent("Validated"), ToolboxData("<{0}:ValidateButton runat=server></{0}:ValidateButton>"), ValidationProperty("Text"), _
 ControlBuilder(GetType(ValidateButtonBuilder)), ParseChildren(False), PersistChildren(False)> _
Public Class ValidateButton大量元数据运用的例子

Answer 8

ValidationProperty("Text")
其中text为要参加验证的property名

Answer 9

using System;
using System.Collections;
using System.Collections.Specialized;
using System.ComponentModel;
using System.IO;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;namespace Commbox
{
/// <summary>
/// WebCustomControl1 的摘要说明。
/// </summary>
[
DefaultEvent("TextChanged"),
DefaultProperty("Text"),
ValidationProperty("Text")，//here
]
//public class ComboBox:WebControl, INamingContainer,IPostBackDataHandler
public class ComboBox:TextBox
{

ListBox lb;  
//public ComboBox():base(HtmlTextWriterTag.Input)
public ComboBox()
{
lb=new ListBox();
lb.Style["position"]="absolute";
lb.Style["display"]="none";
lb.Style["filter"]="progid:DXImageTransform.Microsoft.dropshadow(OffX=2, OffY=2, Color='gray', Positive='true')";
lb.EnableViewState=true;
Controls.Add(lb);
}

[
PersistenceMode(PersistenceMode.InnerProperty),
DesignerSerializationVisibility(DesignerSerializationVisibility.Content),
]
public  ListItemCollection Items
{
get
{
return  lb.Items;
}

} [
DefaultValue(null),
]
public  object DataSource
{
get
{
 return  lb.DataSource;
}
set
{
               if(value!=null)
               lb.DataSource=value;
}     }
[
DefaultValue(""),
]
public  string  DataMember
{
get
{
return  lb.DataMember;

}
set
{
lb.DataMember=value;
} } [
DefaultValue(""),
] public  string  DataTextField
{
get
{  
return lb.DataTextField;
}
set
{
lb.DataTextField=value;

}
}
[
DefaultValue(""),
]
public  string  DataValueField
{
get
{  
return lb.DataValueField;
}
set
{
lb.DataValueField=value;

}
} [
DefaultValue(""),
]
public  string  DataTextFormatString
{
get
{  
return lb.DataTextFormatString;

}
set
{
lb.DataTextFormatString=value;
} } protected new void OnDataBinding(EventArgs e)
{
  lb.DataBind();
          
}
[
DefaultValue(false),
]
public new bool AutoPostBack
{
get
{
return ViewState["AutoPostBack"]==null?false:true;
}
set
{
if(value)
ViewState["AutoPostBack"]=0;
else
ViewState.Remove("AutoPostBack");
}
}
[
DefaultValue(""),
]
public override string Text
{
get
{
return Convert.ToString(ViewState["Text"]);
}
set
{
ViewState["Text"]=value;
}
}
[
DefaultValue(""),
]
public  string  ComBoxCssClass
{
get
{
return lb.CssClass;
}
set
{

lb.CssClass=value;

}
} [
DefaultValue(0),
]
public override int MaxLength
{
get
{
object o=ViewState["MaxLength"];
return o==null?0:(int)o;
}
set
{
ViewState["MaxLength"]=value;
}
} static private string _scriptBlock;
static protected string ScriptBlock
{
get
{
if(_scriptBlock==null)
{
using(Stream s=typeof(ComboBox).Assembly.GetManifestResourceStream(typeof(ComboBox).FullName+".js"))
{
using(StreamReader sr=new StreamReader(s))
{
_scriptBlock="<script language=jscript>"+sr.ReadToEnd()+"</script>";
}
}
}
return _scriptBlock;
}
}
protected override void OnPreRender(System.EventArgs e)
{
base.OnPreRender(e); Page.RegisterStartupScript(this.UniqueID,"<script>LostinetSampleComboBox_Init('"+this.UniqueID+"','"+lb.UniqueID+"');</script>");

string key=typeof(ComboBox).FullName;
if(!Page.IsClientScriptBlockRegistered(key))
{
Page.RegisterClientScriptBlock(key,ScriptBlock);
}
} protected override void AddAttributesToRender(System.Web.UI.HtmlTextWriter writer)
{
base.AddAttributesToRender(writer);
writer.AddAttribute(HtmlTextWriterAttribute.Name,this.UniqueID);
writer.AddAttribute(HtmlTextWriterAttribute.Value,this.Text,true);
writer.AddAttribute("AutoComplete","Off");
if(MaxLength>0)
writer.AddAttribute(HtmlTextWriterAttribute.Maxlength,MaxLength.ToString(),false);
if(this.AutoPostBack)
writer.AddAttribute(HtmlTextWriterAttribute.Onchange,Page.GetPostBackEventReference(this),false);
} public void RaisePostDataChangedEvent()
{
OnTextChanged(EventArgs.Empty);
} public bool LoadPostData(string postDataKey, System.Collections.Specialized.NameValueCollection postCollection)
{
string v=postCollection[postDataKey];
if(v==Text)
return false;
Text=v;
return true;
}
        
/*  //新得系统
public  new event EventHandler TextChanged; protected  new  void OnTextChanged(EventArgs e)
{
if(TextChanged!=null)
TextChanged(this,e);
}
*/ /*
protected override void LoadViewState(object savedState)
{
Pair p=(Pair)savedState;
base.LoadViewState(p.First);
//((IStateManager)lb.Items).LoadViewState(p.Second); } protected override object SaveViewState()
{

//return new Pair(base.SaveViewState(),((IStateManager)lb.Items).SaveViewState());
return new Pair(base.SaveViewState(),null);

} protected override void TrackViewState()
{
base.TrackViewState();
//((IStateManager)lb.Items).TrackViewState();
}
*/
}}

Answer 10

请小鹿到这个贴子去接分。http://expert.csdn.net/Expert/topic/1870/1870212.xml?temp=.3180963