【NET】Winform用户控件的初步封装之列表页控件

 public abstract partial class TListPager<TEntity, TRepository, TSqlStrConstruct> : UserControl
         where TEntity:Yom.Extend.Entity.EntityBase
         where TRepository : Yom.Extend.Repository.RepositoryBaseRepository<TEntity, TSqlStrConstruct>
         where TSqlStrConstruct : Huawei.Data.SqlStrConstruct
     {
         protected TRepository repository = System.Activator.CreateInstance<TRepository>();
         ToolTip toolTip;
         TSqlStrConstruct sqlStrConstruct;
         public TListPager()
         {
             InitializeComponent();
             if (this.IsContextMenu)
             {
                 this.lvList.ContextMenuStrip = this.cmsOperation;
             }
             this.wfpPager.PageSize = ;
             this.wfpPager.PageChanged += new WinFormPager.PageChangeDelegate(
                 () =>
                 {
                     DataBind();
                 }
             );
             this.Dock = System.Windows.Forms.DockStyle.Fill;
             this.lvList.Dock = System.Windows.Forms.DockStyle.Top;
             this.lvList.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
                         | System.Windows.Forms.AnchorStyles.Left)
                         | System.Windows.Forms.AnchorStyles.Right)));
             this.lvList.ItemMouseHover += new ListViewItemMouseHoverEventHandler((object o, ListViewItemMouseHoverEventArgs ea) => {
                 if (!string.IsNullOrEmpty(ea.Item.ToolTipText)) {
                     if (this.toolTip == null) {
                         this.toolTip = new ToolTip();
                     }
                     this.toolTip.SetToolTip(this.lvList, ea.Item.ToolTipText);
                 }
             });
             this.cSearcher = this.CSearcher;
             if (this.cSearcher == null)
             {
                 this.pSearchContainer.Visible = false;
                 this.lvList.Location = new Point(, );
                 //this.lvList.Height += this.pSearchContainer.Height;
             }
             else {
                 if (this.cSearcher.SearchAction == null)
                 {
                     this.cSearcher.SearchAction = (SearchArgs sa) =>
                     {
                         if (sa != null)
                         {
                             if (sa.Params != null)
                             {
                                 this.SearchParams = sa.Params.ToArray();
                             }
                             string whereStr = sa.SearchStr.ToString();
                             if (!string.IsNullOrEmpty(whereStr))
                             {
                                 if (string.IsNullOrEmpty(this.Where))
                                 {
                                     this.where = sa.SearchStr.ToString();
                                 }
                                 else
                                 {
                                     this.where = string.Format("{0} AND {1}", this.Where, sa.SearchStr.ToString());
                                 }
                             }

                         }
                         TListPager_Load(null, null);
                     };
                 }
                 this.cSearcher.Dock = DockStyle.Fill;
                 this.pSearchContainer.Height = this.cSearcher.Height;
                 this.pSearchContainer.Controls.Add(this.cSearcher);
                 this.lvList.Location = new Point(, this.pSearchContainer.Height);
                 this.lvList.Height = this.Height - this.cSearcher.Height - this.wfpPager.Height;
             }
             editor = this.Editor;
             Init();
         }
         protected virtual void Init(){

         }
         protected TEditorBase<TEntity, TRepository, TSqlStrConstruct> editor;
         protected abstract TEditorBase<TEntity, TRepository, TSqlStrConstruct> Editor
         {
             get;
         }
          protected void TListPager_Load(object sender, EventArgs e)
         {
             this.wfpPager.CurrentPage = ;
             DataBind();
         }
         protected abstract string Order
         {
             get;

         }
         protected bool IsContextMenu {
             get {
                 return true;
             }
         }
         protected string where;
         protected abstract string Where
         {
             get;
         }
         protected virtual System.Data.IDataParameter[] SearchParams
         {
             get;
             set;
         }
         protected abstract ColumnHeader[] Columns
         {
             get;
         }
         protected Type EntityType {
             get {
                 return typeof(TEntity);
             }
         }
         protected virtual bool EnabledPage
         {
             get {
                 return true;
             }
         }
         public virtual void DataBind(int pageIndex) {
             this.wfpPager.CurrentPage = pageIndex;
             DataBind();
         }
         private void DataBind()
         {
             int count = ;
             TEntity[] tes;
             if (string.IsNullOrEmpty(this.where)) {
                 this.where = this.Where;
             }
             if (EnabledPage)
             {
                 tes = this.repository.FindAll(this.wfpPager.CurrentPage, this.wfpPager.PageSize, this.where, string.IsNullOrEmpty(this.Order)?string.Empty:this.Order, SearchParams, out count) as TEntity[];
             }
             else {
                 tes = this.repository.FindAll(where, Order, this.SearchParams) as TEntity[];
             }
             this.lvList.Columns.Clear();
             this.lvList.Items.Clear();
             this.lvList.Columns.Add(new ColumnHeader(){ Text="序号",Width= });

             this.lvList.Columns.AddRange(this.Columns);
             this.lvList.ShowItemToolTips = true;
             int baseNo = this.wfpPager.PageSize * (this.wfpPager.CurrentPage - );
             string[] itemArr ;
             object propertyValue;
             int columnIndexRecord;
             ListViewItem toAdditem;
             foreach (TEntity te in tes)
             {
                 itemArr = new string[this.Columns.Length + ];
                 itemArr[] = (++baseNo).ToString();
                 columnIndexRecord = ;
                 foreach (ColumnHeader ch in this.Columns) {
                     columnIndexRecord++;
                     if (string.IsNullOrEmpty(ch.Name)) {
                         continue;
                     }
                     try
                     {
                         propertyValue = EntityType.GetProperty(ch.Name).GetValue(te, null);
                     }
                     catch {
                         continue;
                     }
                     if (propertyValue is DateTime)
                     {
                         itemArr[columnIndexRecord] = DateTimeAction(ch.Name, (DateTime)propertyValue);
                     }
                     else
                     {
                         itemArr[columnIndexRecord] = propertyValue.ToString();
                     }

                 }

                 toAdditem = new ListViewItem(itemArr) { Name = EntityType.GetProperty(this.repository.GetEntityKeyName()).GetValue(te, null).ToString() };
                 if (!string.IsNullOrEmpty(this.ItemTooltipFiledName))
                 {
                     toAdditem.ToolTipText = EntityType.GetProperty(this.ItemTooltipFiledName).GetValue(te, null).ToString();
                 }
                 toAdditem.Tag = te;
                 ItemBeforeAdd(toAdditem);

                 this.lvList.Items.Add(toAdditem);

             }
             if (EnabledPage)
             {
                 this.wfpPager.RecordCount = count;
                 if (this.wfpPager.PageTotal.Equals() || count <= )
                 {

                     this.wfpPager.Visible = false;
                     if (this.cSearcher == null)
                     {
                         this.lvList.Height = this.Height;
                     }
                     else
                     {
                         this.lvList.Height = this.Height - this.cSearcher.Height;
                     }
                 }
                 else {
                     this.wfpPager.Visible = true;
                     if (this.cSearcher == null)
                     {
                         this.lvList.Height = this.Height - this.wfpPager.Height;
                     }
                     else
                     {
                         this.lvList.Height = this.Height - this.cSearcher.Height -this.wfpPager.Height;
                     }
                 }
             }
             else {
                 this.wfpPager.Visible = false;
                 if (this.cSearcher == null)
                 {
                     this.lvList.Height = this.Height;
                 }
                 else
                 {
                     this.lvList.Height = this.Height - this.cSearcher.Height;
                 }

             }
         }
         protected virtual void ItemBeforeAdd(ListViewItem toAdditem)
         { 

         }
         protected virtual string ItemTooltipFiledName
         {
             get;
             set;
         }

         protected virtual string DateTimeAction(string propertyName,DateTime dt) {
             try
             {
                 if (dt.Equals(DateTime.MinValue)) {
                     return string.Empty;
                 }
                 return dt.ToString("yyyy-MM-dd HH:mm");
             }
             catch {
                 try
                 {
                     return dt.ToString();
                 }
                 catch
                 {
                     return string.Empty;
                 }
                 //return string.Empty;
             }
         }

         protected virtual void cmsOperation_Opening(object sender, CancelEventArgs e)
         {
             if (this.editor == null && this.cmsOperation.Items.Count.Equals()) {
                 this.cmsOperation.Items.RemoveAt();
                 this.cmsOperation.Items.RemoveAt();
                 this.cmsOperation.Items.RemoveAt();
             }
             if (this.cmsOperation.Items.Count.Equals())
             {
                 if (this.lvList.SelectedItems.Count <= )
                 {
                     this.cmsOperation.Items[].Enabled = this.cmsOperation.Items[].Enabled = false;
                 }
                 else
                 {
                     this.cmsOperation.Items[].Enabled = this.cmsOperation.Items[].Enabled = true;
                 }
             }
             else {
                 if (this.lvList.SelectedItems.Count <= )
                 {
                     this.cmsOperation.Items[].Enabled = false;
                 }
                 else
                 {
                     this.cmsOperation.Items[].Enabled = true;
                 }
             }
         }
         protected virtual bool DeleteValid(out string msg) {
             msg = string.Empty;
             return true;
         }
         protected virtual void cmsOperation_ItemClicked(object sender, ToolStripItemClickedEventArgs e)
         {
             this.cmsOperation.Visible = false;
             string key = e.ClickedItem.Tag == null ? e.ClickedItem.Text : e.ClickedItem.Tag.ToString();
             switch (key)
             {
                 case "添加":
                     //if (this.cmsOperation.Tag != null)
                     //{
                     //    (this.cmsOperation.Tag as Button).PerformClick();
                     //}
                     //else
                     //{
                     //    (this.Parent.Parent.Controls.Find("Edit", true)[0] as Button).PerformClick();
                     //}
                     editor = this.Editor;
                     if (this.editor == null) {
                         return;
                     }

                     this.Hide();
                     this.Parent.Controls.Add(this.editor);
                     break;
                 case "编辑":
                     //Button b;;
                     //if (this.cmsOperation.Tag != null)
                     //{
                     //    b = this.cmsOperation.Tag as Button;
                     //}
                     //else
                     //{
                     //    b = (this.Parent.Parent.Controls.Find("Edit", true)[0] as Button);
                     //}
                     //b.Tag = this.lvList.FocusedItem.Name;
                     //b.PerformClick();
                     editor = this.Editor;
                     if (this.Editor == null)
                     {
                         return;
                     }

                     if (this.lvList.SelectedItems.Count > ) {
                         MessageBox.Show("只能选择一项!");
                         return;
                     }
                     if (this.lvList.SelectedItems.Count < )
                     {
                         MessageBox.Show("至少选择一项!");
                         return;
                     }
                     this.Hide();
                     this.Parent.Controls.Add(this.editor);
                     this.editor.Key = this.lvList.SelectedItems[].Name;
                     break;
                 case "删除":
                     try
                     {
                         if (!Huawei.PortableComputer.Log.LogVar.UserName.Equals("admin"))
                         {
                             MessageBox.Show("只有超级管理员才有删除记录的权限。");
                             return;
                         }
                     }
                     catch { }
                     string msg;
                     if (!DeleteValid(out msg)) {
                         if (!string.IsNullOrEmpty(msg)) {
                             MessageBox.Show(msg);
                             return;
                         }
                     }
                     if (DialogResult.OK.Equals(MessageBox.Show("确定要删除吗?", "通知", MessageBoxButtons.OKCancel)))
                     {
                         TEntity entity;//= System.Activator.CreateInstance<TEntity>();
                         if (sqlStrConstruct == null)
                         {
                             sqlStrConstruct = System.Activator.CreateInstance<TSqlStrConstruct>();
                         }
                         foreach (ListViewItem item in this.lvList.SelectedItems)
                         {
                             //this.EntityType.GetProperty(this.repository.GetEntityKeyName()).SetValue(entity, item.Name, null);
                             entity = this.repository.FindBy(item.Name) as TEntity;
                             this.repository.Delete(entity);
                             if (sqlStrConstruct.TableName.Equals("TB_SYS_LOG"))
                             {
                                 continue;
                             }
                             Log.LogWriter.Write(string.Format("删除了信息,表为{0},主键为：{1}", sqlStrConstruct.TableName, item.Name));
                         }
                         TListPager_Load(sender, e);
                     }
                     break;
             }
         }
         CSearcher cSearcher;
         protected abstract CSearcher CSearcher
         {
             get;
         }
     }