可能很初级的问题,把我难倒了,各位一定要帮我!dudu我把问题发到提问区没人理所以只好到首页放一放
我作了一个层次结构的类,然后想用这个层次结构动态生成页面,页面是生成了,可作了一些操作以后点按钮却什么也没有了
。
具体问题如下:
首先,因为数据现在是不定的,所以我将数据封装到一个带有结构的类中:
public class Privileges
{
public Dictionary<int,Panel> Panels;
private DataSet PriDs;
private Classid;
public Privileges(string obj, string id)
{
init(obj,id);
}
private void init(string obj,string id)
{
//dosome thing for init ,for example PriDs
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MakePanels();
}
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private void MakePanels()
{
Panels = new Dictionary<int,Panel>();
string name, id;
DataTable dt;
for (int i = 0; i < PriDs.Tables.Count; i++)
{
dt = PriDs.Tables[i];
name = dt.Rows[0]["className"].ToString();
id = dt.Rows[0]["classID"].ToString();
Panels.Add(i, new Panel(dt, name, id));
}
}
public class Panel
{
public string Name;
public string ID;
public Dictionary<int, Group> Groups;
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public Panel(DataTable dt,string name,string id)
{
this.Name = name;
this.ID = id;
MakeGroups(dt);
}
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private void MakeGroups(DataTable dt)
{
Groups = new Dictionary<int,Group>();
string name, id, elementstruct, value, type,cnname;
for (int i = 0; i < dt.Rows.Count; i++)
{
name = dt.Rows[i]["name"].ToString();
cnname = dt.Rows[i]["cnname"].ToString();
id = dt.Rows[i]["privilegeid"].ToString();
elementstruct = dt.Rows[i]["code"].ToString();
type = dt.Rows[i]["controltype"].ToString();
value = dt.Rows[i]["value"].ToString();
Groups.Add(i, new Group(name,cnname, id, elementstruct, value, type));
}
}
}
public class Group
{
public string Name;
public string CnName;
public string ID;
public string Value;
public string Type
{
get
{
return type;
}
set
{
if (value != "DropDownList" && value != "CheckBoxList" && value != "RadioButtonList")
{
type = "CheckBoxList";
}
else
{
type = value;
}
}
}
public Dictionary<int, Element> Elements;
private string type;
private string ElementStruct;
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public Group(string name,string cnname,string id,string elementStruct,string value,string type)
{
this.Name = name;
this.CnName = cnname;
this.ID = id;
this.ElementStruct = elementStruct;
this.Value = value;
this.Type = type;
Elements = new Dictionary<int,Element>();
MakeLeafs();
}
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public void MakeLeafs()
{
string[] structure = ElementStruct.Split(';');
ListDictionary valueList=new ListDictionary();
string[] valueStr = Value.Split(',');
for (int i = 0; i < valueStr.Length; i++)
{
valueList.Add(valueStr[i],i);
}
for (int i=0; i < structure.Length; i++)
{
string[] NameID = structure[i].Split(',');
string leafName = NameID[0];
string leafID = NameID[1];
if(valueList[leafID]!=null)
{
Elements.Add(i,new Element(leafName,leafID,true));
}else
{
Elements.Add(i, new Element(leafName, leafID, false));
}
}
}
}
public class Element
{
public string Name;
public string ID;
public bool State;
public Element(string name, string id, bool state)
{
this.Name = name;
this.ID = id;
this.State = state;
}
}
}
然后,我将这个类传递给页面,页面通过遍历将其格式化显示出来
public partial class testOrg_testDB : System.Web.UI.Page
{
DataTable dt = new DataTable();
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
this.PReport.Visible = false;
initDDL();
}
}
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private void initDDL()
{
for (int i = 0; i < 4; i++)
{
this.DropDownList1.Items.Add(Privileges.objStruct[i]);
}
}
protected void Button1_Click(object sender, EventArgs e)
{
string id = this.TextBoxCode.Text;
string obj = this.DropDownList1.SelectedValue;
ViewState["id"] = id;
ViewState["obj"] = obj;
if (id == "")
{
this.PReport.Visible = false;
}
else
{
this.PReport.Visible = true;
Privileges Prl = new Privileges(obj, id);
initOrg(Prl);
}
}
private void initOrg(Privileges p)
{
for (int i = 0; i < p.Panels.Count; i++)
{
//@panel
PReport.ID = "Panel"+p.Panels[i].ID;
PReport.Header.Text=p.Panels[i].Name;
for (int j = 0; j < p.Panels[i].Groups.Count; j++)//@group
{
WebGroupBox pp = new WebGroupBox();
pp.Text = p.Panels[i].Groups[j].CnName;
pp.ID = "Wgb"+p.Panels[i].Groups[j].ID;//@groupid
pp.Controls.Add(makeElements(p.Panels[i].Groups[j]));//@makeElements
PReport.Controls.Add(pp);
}
}
}
private ListControl makeElements(Privileges.Group g)//@element
{
string type = g.Type.ToLower();
ListControl lc;
if (type == "dropdownlist")
{
lc = new DropDownList();
}
else if (type == "radiobuttonlist")
{
lc = new RadioButtonList();
}
else if (type == "checkboxlist")
{
lc = new CheckBoxList();
}
else
{
throw new Exception("invalid data");
}
for (int i = 0; i < g.Elements.Count; i++)
{
ListItem li = new ListItem(g.Elements[i].Name, g.Elements[i].ID);
if (g.Elements[i].State == true)
{
li.Selected = true;
}
lc.Items.Add(li);
}
return lc;
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}
protected void ButtonUpdata_Click(object sender, EventArgs e)
{
// for (int j = 0; j < PReport.Controls.Count; j++)//@groups
// {
// Control group = PReport.Controls[j];
// string groupid = group.ID;
// string value = string.Empty;
// for (int m = 0; m < group.Controls.Count; m++)//@elementlist
// {
// Control lc = (ListControl)group.Controls[m];
// }
// }
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//}
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}
}
问题:当我点更新返回的时候,发现我所new出来的control全都没有了!(可能代码写的很烂,为了避免大家头疼,我把代码简化了一点)
解决:我通过msdn发现原来由于dom本身就是扁平的(呵呵,我自己这么说,提法有点业余)所以需要通过一个NamingContainer属性来访问下级控件,可是俺找了半天也没有找到这样的方法,msdn中的示例是空的,郁闷...
如果改用Repeater我以前写的好多业务类(是我考虑了很久才写出来的)还得重新写![](https://www.cnblogs.com/Emoticons/QQ/16.gif)
我作了一个层次结构的类,然后想用这个层次结构动态生成页面,页面是生成了,可作了一些操作以后点按钮却什么也没有了
![](https://www.cnblogs.com/Emoticons/QQ/16.gif)
具体问题如下:
首先,因为数据现在是不定的,所以我将数据封装到一个带有结构的类中:
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
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然后,我将这个类传递给页面,页面通过遍历将其格式化显示出来
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问题:当我点更新返回的时候,发现我所new出来的control全都没有了!(可能代码写的很烂,为了避免大家头疼,我把代码简化了一点)
解决:我通过msdn发现原来由于dom本身就是扁平的(呵呵,我自己这么说,提法有点业余)所以需要通过一个NamingContainer属性来访问下级控件,可是俺找了半天也没有找到这样的方法,msdn中的示例是空的,郁闷...
如果改用Repeater我以前写的好多业务类(是我考虑了很久才写出来的)还得重新写
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