WEBPART结合实际的应用(.Net2005)
WEBPART已经不是很新鲜的东西了,但是小生是最近才使用到(汗,惭愧。),既然是BLOG当然会想分享自己的一些小知识,有兴趣的朋友可以看看。
本次的目的主要是为了实现用户自定义初始页界面,我做了好多用户控件来供用户选择,当然用户并不能选择所有的用户控件,他只能根据自己的权限在设定范围内选择。在用户没有定义界面以前,既初始状态下,程序会根据用户当前的角色为用户定义界面,动态的将用户控件包装成WEBPART加到WEBPARTZONE里面去。在用户自己配置过界面后,以后都按用户配置的方式显示。
用户控件的编写我就不罗嗦了,都是一些信息的聚合,比如通知啊规章制度啊这样的信息模块。具体来说说后面的,为了实现以上目标我们需要几张表,一张是用户控件管理表,记录了用户控件的ID,名字,以及存放位置,还有控件会加载到哪一个WEBPARTZONE中。(我在用户界面中定义了3个WEBPARTZONE)。另一张是角色控件对应表,指定那一个角色可以拥有哪些控件,这两张表都很简单,这样基础的后台就有了。
在前台用户进入主界面的时候做一个判断,看页面的WEBPARTZONE中是否有WEBPART,如果没有就根据用户角色将所拥有的用户控件加到主界面中去。
代码如下
上面是在用户没有进行设置时候进行的初始操作,当用户要自定义界面时候,通过一个按钮将页面模式设置为CatalogDisplayMode。页面有一个CatalogZone控件,用来存放当前角色所拥有的用户控件。在这里最主要的程序就是需要一个WebPartsTemplate来存放这些控件,我们需要自己写一个实现 ITemplate接口的类。代码如下。
最后在添加WEBPART的时候做一点小处理
本次的目的主要是为了实现用户自定义初始页界面,我做了好多用户控件来供用户选择,当然用户并不能选择所有的用户控件,他只能根据自己的权限在设定范围内选择。在用户没有定义界面以前,既初始状态下,程序会根据用户当前的角色为用户定义界面,动态的将用户控件包装成WEBPART加到WEBPARTZONE里面去。在用户自己配置过界面后,以后都按用户配置的方式显示。
用户控件的编写我就不罗嗦了,都是一些信息的聚合,比如通知啊规章制度啊这样的信息模块。具体来说说后面的,为了实现以上目标我们需要几张表,一张是用户控件管理表,记录了用户控件的ID,名字,以及存放位置,还有控件会加载到哪一个WEBPARTZONE中。(我在用户界面中定义了3个WEBPARTZONE)。另一张是角色控件对应表,指定那一个角色可以拥有哪些控件,这两张表都很简单,这样基础的后台就有了。
在前台用户进入主界面的时候做一个判断,看页面的WEBPARTZONE中是否有WEBPART,如果没有就根据用户角色将所拥有的用户控件加到主界面中去。
代码如下
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int count = 0;
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foreach (WebPartZone wpz in wpmMain.Zones)
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{
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count += wpz.WebParts.Count;
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}
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if (count == 0)
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{
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Shuttle shuttle = Shuttle.CreateShuttle("fGet_UI_SysUserControl");
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shuttle.SetParameterValue("UserID", ParseHelper.IntParse(User.Identity.Name));
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DataSet ds = (DataSet)DataHelper.Execute(shuttle);
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foreach (DataRow dr in ds.Tables[0].Rows)
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{
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Control uc = this.LoadControl(@"Controls/" + dr["ControlPath"].ToString());
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uc.ID = dr["ControlID"].ToString();
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GenericWebPart wp2 = wpmMain.CreateWebPart(uc);
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wp2.Title = dr["ByName"].ToString();
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wpmMain.AddWebPart(wp2, wpmMain.Zones[Convert.ToInt32(dr["ControlField"].ToString())], 0);
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}
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}
在这里我其实自己还有个问题没有解决,就是我动态加载的这些WEBPART无法保存到数据库当中去,不知道有哪为朋友做过类似的东西,可以指点一下。![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
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上面是在用户没有进行设置时候进行的初始操作,当用户要自定义界面时候,通过一个按钮将页面模式设置为CatalogDisplayMode。页面有一个CatalogZone控件,用来存放当前角色所拥有的用户控件。在这里最主要的程序就是需要一个WebPartsTemplate来存放这些控件,我们需要自己写一个实现 ITemplate接口的类。代码如下。
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class wt : ITemplate
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{
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private WebPartManager w;
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private Page p;
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string userid;
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int count;
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public void InstantiateIn(Control container)
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{
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Shuttle shuttle = Shuttle.CreateShuttle("fGet_UI_SysUserControl");
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shuttle.SetParameterValue("UserID", ParseHelper.IntParse(userid));
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DataSet ds =(DataSet) DataHelper.Execute(shuttle);
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foreach (DataRow dr in ds.Tables[0].Rows)
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{
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Control uc = p.LoadControl(@"Controls/" + dr["ControlPath"].ToString());
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uc.ID = dr["ControlID"].ToString();
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GenericWebPart wp = w.CreateWebPart(uc);
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wp.Title = dr["ByName"].ToString();
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container.Controls.Add(wp);
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}
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}
这样在切换模式以后就可以根据角色选择自己所需要的控件了。如下图![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
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protected void wpmMain_WebPartAdding(object sender, WebPartAddingEventArgs e)
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{
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foreach (WebPartZone wpz in wpmMain.Zones)
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{
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if (!CheckWebPart(e.WebPart, wpz))
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{
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e.Cancel = true;
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WebDialog.Show(this.Page, "配置中已包含有该模块.");
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return;
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}
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}
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e.Cancel = false;
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}private bool CheckWebPart(WebPart wp, WebPartZoneBase wpz)
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{
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foreach (WebPart w in wpz.WebParts)
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{
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if (w.Title.Equals(wp.Title))
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{
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return false;
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}
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}
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return true ;
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}
至此,上面说的基本功能已经实现,如果大家有更好的办法或者是可以解决我说的动态WEBPART保存的问题请指点一下,交流促进发展
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