如何保存代码生成的对象（变量）值

szjazz · 发表于 2013-3-7 02:26:47

本帖最后由 szjazz 于 2013-3-7 04:21 编辑

通过代码生成对象，过程放在Page_Init，但初始化完毕后，每次点击生成对象的事件时均会重新调用Page_Init，这样，就无法保存初始化后有修改的对象（变量）值，请问各位大师们，有什么方法？或者应该如何设计？

<x:TabStrip ID="tabStripForm" runat="server" ActiveTabIndex="0" ShowBorder="True"
BoxFlex="1" OnTabIndexChanged="TabIndex_Change" AutoPostBack="True">
<Tabs>
</Tabs>

复制代码

namespace WebJazz.ES
{
public partial class ShowFormGrp : PageBase
{
Jazz.BLL.ES.Form.FormInfo bllForm = new Jazz.BLL.ES.Form.FormInfo();
Jazz.Model.ES.Form.FormInfo modelFormInfo = new Jazz.Model.ES.Form.FormInfo();
Jazz.Model.ES.Form.FormAcl modelFormAcl = new Jazz.Model.ES.Form.FormAcl();
List<Jazz.Model.ES.Form.FormInfo> modelFormInfoLst = new List<Jazz.Model.ES.Form.FormInfo>();
List<Jazz.Model.ES.Form.FormAcl> modelFormAclLst = new List<Jazz.Model.ES.Form.FormAcl>();
public class TabInfo
{
public string Id { get; set; }
public bool ChangeRefresh { get; set; }
public bool RefreshState { get; set; }
}
public List<TabInfo> tabInfoLst = new List<TabInfo>();
protected void Page_Init(object sender, EventArgs e)
{
Init_Page();
}
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
...... Load_Data();
}
}
protected void Init_Page()
{
dsFormGrp = FormGroup(2);
FormGrpKeyField = dsFormGrp.Tables[0].Rows[0]["FormGrpKeyField"].ToString().Split(',');
FormGrpKeyValue = new string[FormGrpKeyField.Length];
Init_Tab();
}
protected void Init_Tab()
{
foreach (DataRow dr in dsFormGrp.Tables[1].Rows)
{
string FormId = dr["FormId"].ToString();
//由表单在组表中的类别与表单的ID组成，类别有：M=主表单、S=从表单,例子：M-88.1
modelFormInfo = bllForm.GetFormInfoById(FormId);
modelFormAcl = bllForm.GetFormUserAuthById(FormId, UserId);
modelFormAclLst.Add(modelFormAcl);
modelFormInfoLst.Add(modelFormInfo);
if (modelFormAcl != null)
{
if (modelFormAcl.oper > 0)
{
Tab tab = new Tab();
//由表单在组表中的类别与表单的ID组成，类别有：M=主表单、S=从表单,例子：M-88.1
tab.ID = dr["FormType"].ToString() + "-" + FormId;
tab.Title = dr["FormShowName"].ToString();
tab.Layout = FineUI.Layout.Fit;
tabStripForm.Tabs.Add(tab);
TabInfo tabInfo = new TabInfo();
Init_ToolBar(tab, FormId, modelFormAcl, modelFormInfo.FormType);
switch (dr["FormType"].ToString())
{
case "M":
Init_Frame(tab, FormId);
tabInfo.ChangeRefresh = true;
break;
case "S":
//非主表单,从属表单，以表格形式显示记录
Init_Grid(tab, FormId);
tabInfo.ChangeRefresh = false;
break;
case "X":
tabInfo.ChangeRefresh = false;
break;
}
tabInfo.Id = tab.ID;
tabInfo.RefreshState = false;
tabInfoLst.Add(tabInfo);
}
}
}
}
protected void Init_ToolBar(Tab tab, string FormId, Jazz.Model.ES.Form.FormAcl modelFormAcl, int FormType)
{
//
Toolbar tf = new Toolbar();
tf.Items.Add(new ToolbarFill());
Init_Button("Re-" + FormId, "刷新", "~\\res\\images\\icon\\refresh.png", tf);
......
tab.Toolbars.Add(tf);
}
protected void Init_Button(string btn_ID, string btn_Name, string btn_iconUrl, Toolbar tf)
{
FineUI.Button btn = new FineUI.Button();
btn.ID = btn_ID;
btn.Text = btn_Name;
btn.IconUrl = btn_iconUrl;
btn.Click += new EventHandler(btn_Click);
btn.Size = FineUI.ButtonSize.Medium;
tf.Items.Add(btn);
}
protected FineUI.Panel Init_Frame(Tab tab, string FormId)
{
FineUI.Panel pFrame = new FineUI.Panel();
pFrame.ID = "Frame-" + FormId;
pFrame.IFrameName = "Frame-" + FormId;
pFrame.EnableIFrame = true;
pFrame.AutoScroll = true;
pFrame.ShowHeader = false;
tab.Items.Add(pFrame);
return pFrame;
}
protected void Init_Grid(Tab tab, string FormId)
{
//
Grid grid = new Grid();
grid.ID = "Grid-" + FormId;
.....
grid.Columns.Add(bf); }
tab.Items.Add(grid);
}
protected void btn_Click(object sender, EventArgs e)
{
FineUI.Button btn = (FineUI.Button)sender;
string target;
if (btn.ID.Substring(0,3) == "Re-")
{
//手动刷新
target = "Frame-" + tabStripForm.ActiveTab.ID.Substring(2);
FineUI.Panel panel = (FineUI.Panel)tabStripForm.ActiveTab.FindControl(target);
panel.RefreshIFrame();
}
}
protected void Load_Data()
{
foreach (Tab tab in tabStripForm.Tabs)
{
//由表单在组表中的类别与表单的ID组成，类别有：M=主表单、S=从表单,例子：M-88.1
string FormId = tab.ID.ToString().Substring(2);
string FormType = tab.ID.ToString().Substring(0, 1);
if (FormType == "M")
{
//显示主表单内容
Load_Form_Data(tab, FormId, FormGrpKeyField, FormGrpKeyValue);
}
else
{
//显示表格记录
Load_Grid_Data(tab, FormId, FormGrpKeyField, FormGrpKeyValue);
}
}
}
protected void Load_Form_Data(FineUI.Tab tab, string FormId, string[] FormGrpKeyField, string[] FormGrpKeyValue)
{
FineUI.Panel pFrame = new FineUI.Panel();
pFrame = (FineUI.Panel)tab.FindControl("Frame-" + FormId);
modelFormInfo = modelFormInfoLst.Find(delegate(Jazz.Model.ES.Form.FormInfo model) { return model.FormId == FormId; });
modelFormAcl = modelFormAclLst.Find(delegate(Jazz.Model.ES.Form.FormAcl model) { return model.RtId == FormId; });
//"ExcelServerRcId","WiId","ExcelServerRN","ExcelServerCN" ="_rcId", "_wiId", "_rn", "_cn"
FormSysKeyValue[0] = bllForm.GetFormSysKeyByFormKey(FormId, FormSysKeyFieldAlias[0], FormGrpKeyField, FormGrpKeyValue);
if (modelFormInfo.FormType == 1)
//工作流表单
FormSysKeyValue[1] = bllForm.GetFormSysKeyByFormKey(FormId, FormSysKeyFieldAlias[1], FormGrpKeyField, FormGrpKeyValue);
else
FormSysKeyValue[1] = string.Empty;
string AuthStr = modelFormInfo.itemType;
string Url = null;
if (FormSysKeyValue[0] != null)
Url = string.Format("http://localhost/esweb/Appfunc/main.aspx?repref={0}&rcId={1}&openWiId={2}&flag={3}&isReadOnly=1", FormId, FormSysKeyValue[0], FormSysKeyValue[1], AuthStr);
pFrame.IFrameUrl = Url;
}
protected void Load_Grid_Data(FineUI.Tab tab, string FormId, string[] FormGrpKeyField, string[] FormGrpKeyValue)
{
FineUI.Grid grid = new FineUI.Grid();
grid = (FineUI.Grid)tab.FindControl("Grid-" + FormId);
DataSet ds = bllForm.GetFormMgrLstById(FormId, FormGrpKeyField, FormGrpKeyValue);
grid.DataSource = ds.Tables[0];
grid.DataBind();
}
protected void TabIndex_Change(object sender, EventArgs e)
{
//希望切换Tab时，能刷新IFrame,但只刷新一次，所以需要保留状态
FineUI.TabStrip tabStrip = (FineUI.TabStrip)sender;
string tabId = tabStripForm.ActiveTab.ID;
TabInfo tabInfo = new TabInfo();
tabInfo = tabInfoLst.Find(delegate(TabInfo info) { return info.Id == tabId; });
if (tabInfo.ChangeRefresh && tabInfo.RefreshState == false)
{
tabInfo.RefreshState = true;
FineUI.Panel panel = (FineUI.Panel)tabStripForm.ActiveTab.FindControl("Frame-" + tabId.Substring(2));
panel.RefreshIFrame();
}
}
}
}

复制代码

随州热线 · 发表于 2013-3-7 03:31:03

不明白，你说的是什么意思

虫豸 · 发表于 2013-3-7 04:28:12

其实我也是不太明白
你是说数据取出来了然后下次再访问的时候取不到？

′訫冇所屬． · 发表于 2013-3-7 05:31:05

是不是页面上有个tab 第一次点击选项卡标签时重新加载iframe？

szjazz · 发表于 2013-3-7 05:41:49

′訫冇所屬．发表于 2013-3-7 05:31
是不是页面上有个tab 第一次点击选项卡标签时重新加载iframe？

是的，重新加载一次iFrame

老皮鞋 · 发表于 2013-3-8 09:18:06

用session或cookies

石头 · 发表于 2013-3-11 03:37:32

protected void Page_Init(object sender, EventArgs e)

20.       {
            if(!IsPostBack)
            {
21.          Init_Page();
               Load_Data();
               }

22.       }

Page_Load方法删掉，MBasePage已经继承了Page，这里不用再写了

szjazz · 发表于 2013-3-12 10:36:28

石头发表于 2013-3-11 03:37
protected void Page_Init(object sender, EventArgs e)

20. {

如果是Page_Init过程加判断IsPostBack，则会发生控件无法用代码来控制，所有生成的控件对象会变成null

conqueror · 发表于 2013-3-13 05:55:44

是不错的哇！！！

sanshi · 发表于 2013-3-13 09:20:14

可以把问题简化成一个可以直接运行的例子，这样方便别人调试

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