重新封装了一个 GridView，支持如下功能：
1. CheckBox选择记录，指定CheckBox的位置
2. 支持List，DataSet,Datatable 排序
3. 排序时在Header部分出现图标
4. 封装了PageIndexChanged 和DataBind，不用每页都写。
5. 支持SQL分页和ApsNetPager等分页控件。
注： 没有加入很多的功能，因为本身需要的就是一个轻量级的GridView，产生近可能少的代码。
另：选择高亮功能是用JQuery实现的，因此使用时需要JQuery的运行库。
代码1 ： 辅助对象，实现Sort排序。（其实这部分功能可以用LINQ来做，会简单很多，当这个类已经用了很久了，懒得改了）
1 using System;
2 using System.Collections;
3 using System.Collections.Generic;
4 using System.Reflection;
5
6 namespace xxWare.xxControls
7 {
8 public class Reverser<T> : IComparer<T>
9 {
10 private Type _type = null;
11 private ReverserInfo info;
12
13 /// <summary>
14 /// 构造函数
15 /// </summary>
16 /// <param name="type">进行比较的类类型</param>
17 /// <param name="name">进行比较对象的属性名称</param>
18 /// <param name="direction">比较方向(升序/降序)</param>
19 public Reverser(Type _type, string _name, string _direction)
20 {
21 this._type = _type;
22 this.info.name = _name;
23 this.info.direction = _direction.ToLower();
24 }
25
26 /// <summary>
27 /// 构造函数
28 /// </summary>
29 /// <param name="className">进行比较的类名称</param>
30 /// <param name="name">进行比较对象的属性名称</param>
31 /// <param name="direction">比较方向(升序/降序)</param>
32 public Reverser(string _className, string _name, string _direction)
33 {
34 try
35 {
36 this._type = Type.GetType(_className, true);
37 this.info.name = _name;
38 this.info.direction = _direction.ToLower();
39 }
40 catch (Exception e)
41 {
42 throw new Exception(e.Message);
43 }
44
45 }
46
47 /// <summary>
48 /// 构造函数
49 /// </summary>
50 /// <param name="t">进行比较的类型的实例</param>
51 /// <param name="name">进行比较对象的属性名称</param>
52 /// <param name="direction">比较方向(升序/降序)</param>
53 public Reverser(T _t, string _name, string _direction)
54 {
55 this._type = _t.GetType();
56 this.info.name = _name;
57 this.info.direction = _direction;
58 }
59
60 int IComparer<T>.Compare(T t1, T t2)
61 {
62 object x = this._type.InvokeMember(this.info.name, BindingFlags.Public | BindingFlags.Instance | BindingFlags.GetProperty, null, t1, null);
63 object y = this._type.InvokeMember(this.info.name, BindingFlags.Public | BindingFlags.Instance | BindingFlags.GetProperty, null, t2, null);
64
65 if (this.info.direction != "asc")
66 Swap(ref x, ref y);
67 return (new CaseInsensitiveComparer()).Compare(x, y);
68 }
69
70 void Swap(ref object x, ref object y)
71 {
72 object tmp = x;
73 x = y;
74 y = tmp;
75 }
76 }
77 public struct ReverserInfo
78 {
79 public enum Target
80 {
81 Customer = 0,
82 From,
83 Field,
84 Server
85 }
86
87 public string name;
88 public string direction; // asc , desc ;
89 public Target target;
90 }
91 }
代码2： Template类，用于生成CheckBox列
1 using System;
2 using System.Web;
3 using System.Web.UI;
4 using System.Web.UI.WebControls;
5
6 namespace xxWare.xxControls
7 {
8 #region Selector Template
9 public class xxGridColumnTemplate : ITemplate
10 {
11 public void InstantiateIn(Control container)
12 {
13 CheckBox cb = new CheckBox();
14 cb.ID = "FarGV_ColumnSelector";
15 cb.ClientIDMode = ClientIDMode.AutoID;
16 cb.CssClass = "far_rowsselector";
17 container.Controls.AddAt(0, cb);
18 }
19 }
20
21 public class xxGridHeaderTemplate : ITemplate
22 {
23 public void InstantiateIn(Control container)
24 {
25 System.Web.UI.HtmlControls.HtmlInputCheckBox selectAll = new System.Web.UI.HtmlControls.HtmlInputCheckBox();
26 selectAll.ID = "FarGV_ColumnSelectorAll";
27 selectAll.ClientIDMode = ClientIDMode.Static;
28 selectAll.Attributes["onclick"] = "FarGridView_ColumnSelectorAll();";
29 container.Controls.Add(selectAll);
30 }
31 }
32
33 #endregion
34
35 }
主代码： 加了一个属性 AutoSort,当使用SQL分页是，设置为 False即可
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Reflection;
namespace xxWare.xxControls
{
[ToolboxData("<{0}:xxGridView runat=server></{0}:xxGridView>")]
public class xxGridView : System.Web.UI.WebControls.GridView
{
#region Properties
// sort image url : full url = Sort_Image_Url + Asc_Image_Name
[Browsable(true) , Category("Sort Image"), DefaultValue("images/arrow_up.gif") , Description("Asc Image")]
public string Asc_Image { get; set; }
[Browsable(true), Category("Sort Image"), DefaultValue("images/arrow_down.gif"), Description("Desc Image")]
public string Desc_Image { get; set; }
[Browsable(true), Category("Sort Image"), DefaultValue("images/arrow_updn.gif"), Description("Sortable Image")]
public string Sort_Image { get; set; }
//Property : SortExpression
[Browsable(false)]
public string CurrentSortExpression
{
get { return Convert.ToString(ViewState["CurrentSortExpression"]); }
set { ViewState["CurrentSortExpression"] = value.Trim(); }
}
[Browsable(false)]
public string CurrentSortDirection
{
get { return Convert.ToString(ViewState["CurrentSortDirection"]); }
set
{
if (string.IsNullOrEmpty(value))
{
ViewState["CurrentSortDirection"] = "desc";
}
else
{
if (value.ToLower() != "asc" && value.ToLower() != "desc")
{
ViewState["CurrentSortDirection"] = "desc";
}
else
{
ViewState["CurrentSortDirection"] = value.ToString().ToLower();
}
}
}
}
//Property : Multi Show CheckBox
[Category("MultiSelect") , DefaultValue("True")]
public bool AllowMultiSelect
{
get { return bool.Parse(ViewState["AllowMultiSelect"].ToString()); }
set { ViewState["AllowMultiSelect"] = value.ToString(); }
}
[Category("MultiSelect"), DefaultValue(0)]
public int AllowMultiSelectColumn
{
get { return Int32.Parse(ViewState["AllowMultiSelectColumn"].ToString()); }
set { ViewState["AllowMultiSelectColumn"] = value.ToString(); }
}
/*
public string RowSelectFilter
{
get { return (string)ViewState["RowSelectFilter"]; }
set { ViewState["RowSelectFilter"] = value.ToString(); }
}
* */
//Property : Get Selected Items
[Browsable(false)]
public List<GridViewRow> MultiSelectedItem
{
get
{
if (!AllowMultiSelect) return null;
List<GridViewRow> selectedRows = new List<GridViewRow>();
foreach (GridViewRow row in this.Rows)
{
CheckBox cb = (CheckBox)row.Cells[AllowMultiSelectColumn].Controls[0];
if (cb.Checked)
{
selectedRows.Add(row);
}
}
return selectedRows;
}
}
//Define DataSource
private object sourcedata;
public object DataSetSource
{
get
{
if (sourcedata != null)
return sourcedata;
else
return null;
}
set
{
sourcedata = value as object;
}
}
//record count: readonly
private int _recordCount = 0;
[Browsable(false)]
public int RecordCount
{
get { return _recordCount; }
}
//AutoSort : True/False , set to False when use 3rd pager control and Sql Pager , e.g. AspNetPager, DataPager ...
[Browsable(true), Category("Misc"), DefaultValue("True"), Description("Auto Pager")]
public bool AutoSort { get; set; }
#endregion
private ClientScriptManager csManager;
public xxGridView() : base()
{
AllowPaging = false;
AllowSorting = true;
AutoSort = false;
//GridLines = GridLines.Horizontal;
//BorderWidth = (Unit)0;
// Sort Images Default
Asc_Image = @"images/arrow_up.gif";
Desc_Image = @"images/arrow_down.gif";
Sort_Image = @"images/arrow_updn.gif";
//set event handlers
Init += new EventHandler(On_Init);
Sorting += new GridViewSortEventHandler(On_Sorting);
RowCreated += new GridViewRowEventHandler(On_RowCreated);
}
#region Event Handlers
public event EventHandler GridBindEvent;
public virtual void OnGridBind<T>()
{
if (sourcedata!=null)
{
if (CurrentSortExpression==string.Empty)
{
this.DataSource = sourcedata;
this.DataBind();
return;
}
//Datasource Type
if (sourcedata is DataTable)
{
DataView dv = (sourcedata as DataTable).DefaultView;
if (!string.IsNullOrEmpty(CurrentSortExpression) && AutoSort)
dv.Sort = CurrentSortExpression + " " + CurrentSortDirection;
this.DataSource = dv;
_recordCount = dv.Count;
try
{
this.DataBind();
}
catch
{
if (this.PageIndex>1)
{
this.PageIndex--;
this.DataBind();
}
}
}
else if (sourcedata is DataSet)
{
DataView dv = (sourcedata as DataSet).Tables[0].DefaultView;
if (!string.IsNullOrEmpty(CurrentSortExpression) && AutoSort)
dv.Sort = CurrentSortExpression + " " + CurrentSortDirection;
this.DataSource = dv;
_recordCount = dv.Count;
try
{
this.DataBind();
}
catch
{
if (this.PageIndex > 1)
{
this.PageIndex--;
this.DataBind();
}
}
}
else if (sourcedata is List<T>)
{
if (!string.IsNullOrEmpty(CurrentSortExpression) && AutoSort)
{
Reverser<T> reverser = new Reverser<T>(typeof(T), CurrentSortExpression, CurrentSortDirection);
(sourcedata as List<T>).Sort(reverser);
}
this.DataSource = sourcedata;
_recordCount = (sourcedata as List<T>).Count;
try
{
this.DataBind();
}
catch
{
if (this.PageIndex > 1)
{
this.PageIndex--;
this.DataBind();
}
}
}
}
}
public void On_Init(object sender, EventArgs e)
{
// processing multi-select
if (ViewState["AllowMultiSelect"]==null || ViewState["AllowMultiSelect"].ToString().Trim()=="")
ViewState["AllowMultiSelect"] = "True";
if (ViewState["AllowMultiSelectColumn"] == null || ViewState["AllowMultiSelectColumn"].ToString().Trim() == "")
ViewState["AllowMultiSelectColumn"] = "0";
csManager = this.Page.ClientScript;
if (AllowMultiSelect)
{
AddSelectColumn();
RegisterJS();
}
// processing sorting...
if (CurrentSortDirection == null || CurrentSortDirection.Trim() == "")
CurrentSortDirection = "desc";
if (CurrentSortExpression == null) CurrentSortDirection = "";
}
public void On_Sorting(object sender , GridViewSortEventArgs e)
{
CurrentSortExpression = e.SortExpression;
if (CurrentSortDirection == "desc")
CurrentSortDirection = "asc";
else
CurrentSortDirection = "desc";
GridBindEvent(this , EventArgs.Empty);
}
public void On_RowCreated(object sender , GridViewRowEventArgs e)
{
string currentSortImage = "";
if (e.Row.RowType==DataControlRowType.Header)
{
foreach (DataControlField field in this.Columns)
{
if (!String.IsNullOrEmpty(field.SortExpression))
{
if (IsSortedByThisField(field.SortExpression))
{
currentSortImage = (CurrentSortDirection == "asc") ? Asc_Image : Desc_Image;
}
else
{
currentSortImage = Sort_Image;
}
AddSortImage(e.Row, this.Columns.IndexOf(field), currentSortImage);
}
}
}
}
#endregion
#region Override Methods
protected override void OnPageIndexChanging(GridViewPageEventArgs e)
{
//base.OnPageIndexChanging(e);
this.PageIndex = e.NewPageIndex;
GridBindEvent(this, EventArgs.Empty);
}
#endregion
#region private helper function
// For Sort
private void AddSortImage(GridViewRow _row, int _colIndex ,string _currImage)
{
if (-1 == _colIndex) return;
Image sortImage = new Image();
sortImage.ImageUrl = _currImage;
_row.Cells[_colIndex].Controls.AddAt(1, sortImage);
}
private bool IsSortedByThisField(String strSortExpression)
{
return CurrentSortExpression.ToLower() == strSortExpression.Trim().ToLower();
}
// for Multi Select
private void AddSelectColumn()
{
TemplateField tc = new TemplateField();
tc.ItemTemplate = new xxGridColumnTemplate();
tc.HeaderTemplate = new xxGridHeaderTemplate();
this.Columns.Insert(AllowMultiSelectColumn, tc);
}
private void RegisterJS()
{
/*
System.Resources.ResourceManager rm = new System.Resources.ResourceManager("FarGridView", Assembly.GetExecutingAssembly());
string _script = rm.GetString("js_selectall");
if (!csManager.IsClientScriptBlockRegistered(this.GetType() , "js_selectall"))
{
csManager.RegisterClientScriptBlock(this.GetType(), "js_selectall", _script);
}
*/
csManager.RegisterClientScriptResource(this.GetType(), "xxWare.xxControls.xxGridViewJS.js");
}
#endregion
}
}
特别说明：有人问我这个控件的版权问题，这个东东是俺自己做的，没有版权问题，你想怎么改就怎么改，如果你在修改的时候，有一个好主意或者功能，一定要告诉俺 