參考別人的源碼,我的第一個控件誕生了(DataGrid)

看了這個控件,才發覺我的控件只是個嬰兒https://files.cnblogs.com/invinboy/DotNetGrid.rar,兄弟們可以下載這個用.可以去看看這個控件的功能http://invinboy.cnblogs.com/archive/2006/05/06/DotNetGrid.html.

參考別人的源碼,我寫了平生第一個DataGrid控件,不要笑我,有用的上的兄弟們儘管用,我調適過了,使用正常.以後我努力的自創出其他的控件,歡迎關注...


/Files/robin0925/DataGrid_itec.rar

調用方法:
 1.将控件拖到Web Page , 設置分頁屬性
 2.代碼中 
           DataGrid_itec.iTECDataGrid.DT = ds.Tables[0];    ***傳數據到Server Control
           ITECDataGrid1.DataSource = ds.Tables[0]; 
           ITECDataGrid1.DataBind();       ***Bind數據

using System;
using System.Data;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.ComponentModel;

namespace DataGrid_itec
{
    /**//// <summary>
    /// Summary description for iTECDataGrid.
    /// </summary>
    [DefaultProperty("Text"), 
        ToolboxData("<{0}:iTECDataGrid runat=server></{0}:iTECDataGrid>")]
    public class iTECDataGrid : System.Web.UI.WebControls.DataGrid
    {
        Define#region Define
    
        //private string text;
        public System.Web.UI.WebControls.Button bt = new Button();
        private TextBox tb = new TextBox();
        private System.Web.UI.Page pg = new Page();

        private static DataTable dt;
        private LinkButton PrevPage = new LinkButton();
        private LinkButton NextPage = new LinkButton();

        private DropDownList ddl = new DropDownList();
        private Label lbend=new Label();
        private Label lbtag=new Label();
        private Label lbddls=new Label();
        private Label lbddle=new Label();

        #endregion


        DisplayProtery#region DisplayProtery
        public int CurrentIndex
        {
            set
            {
                try
                {
                    this.CurrentPageIndex = value;
                }
                catch
                {}
            }
            get
            {
                return this.CurrentPageIndex;
            }
        }
        #endregion

        Proterty#region Proterty
 
        [Bindable(true), 
        Category("Appearance"), 
        DefaultValue(""),
        DescriptionAttribute("Session's name，Session used in BindData，and it must be DataView type")
        ]

        public static DataTable DT
        {
            get
            {    
                return dt;                
            }
            set
            {
                dt = value;
            }
        }

        [Bindable(true), 
        Category("Appearance"), 
        DefaultValue("")
        ]

        public string TT
        {
            get
            {
                try
                {
                    return this.ViewState["sort"].ToString();
                }
                catch
                {
                    this.ViewState["sort"] = "asc";
                    return this.ViewState["sort"].ToString();
                }
            }
            set
            {
                this.ViewState["sort"] = value;
            }
        }

        #endregion

        /**//// <summary>
        /// 將此控件呈現給指定的輸出參數
        /// </summary>
        /// <param name="e">要寫出到的HTML編寫器</param>
        
        protected override void OnItemCreated(DataGridItemEventArgs e)
        {
            if(e.Item.ItemType==ListItemType.Pager)
            {                
                e.Item.Cells[0].Controls.Clear();
                creatControl(e.Item.Cells[0]);
            }
        }

        protected override void OnItemCommand(DataGridCommandEventArgs e)
        {
            string strCommandName = e.CommandName;
            if(e.CommandName==null)
            {
                return ;
            }
            strCommandName = string.IsInterned(strCommandName);
            switch(e.CommandName)
            {
                case "PrevPage":
                    PrevPage_click(null,null);
                    break;
                case "NextPage":
                    NextPage_click(null,null);
                    break;
            }

            base.OnItemCommand(e);
        }




        InitDataGrid#region InitDataGrid

        protected void creatControl(TableCell tc)
        {            
            creatPageCount(tc);
            creatCount(tc);
            creatPage(tc);
            creatDDL(tc);
        }

        private void creatCount(TableCell tc)
        {
            lbtag.Text = "每頁顯示紀錄數";
            tb.Text = this.PageSize.ToString();
            tb.Width=20;
            bt.Width=40;
            bt.Text = "提交";
            bt.Click += new EventHandler(this.bt_click);
            tc.Controls.Add(lbtag);
            tc.Controls.Add(tb);
            tc.Controls.Add(bt);
        }

        private void creatPageCount(TableCell tc)
        {
            Label lb = new Label();
            lb.Text="<P align=\"right\"> 共"+this.PageCount+"頁    第"+(this.CurrentPageIndex+1)+"頁  ";
            tc.Controls.Add(lb);

        }

        private void creatPage(TableCell tc)
        {
            PrevPage.Text="上一頁";
            NextPage.Text="下一頁";
            PrevPage.CommandName = "PrevPage";
            NextPage.CommandName = "NextPage";
            tc.Controls.Add(PrevPage);
            tc.Controls.Add(NextPage);
        }

        private void creatDDL(TableCell tc)
        {
            lbend.Text="頁</p>";
            lbddls.Text="  跳轉到第";
            ddl.AutoPostBack=true;
            ddl.EnableViewState=true;
            if (!this.Page.IsPostBack)
            {
                ddl.Items.Clear();
                initDDL();
            }
            ddl.SelectedIndexChanged+=new EventHandler(ddl_SelectedIndexChanged);
            tc.Controls.Add(lbddls);
            tc.Controls.Add(ddl);
            tc.Controls.Add(lbend);
        }

        private void initDDL()
        {
            int count = this.PageCount;
            ddl.Items.Clear();
            for(int i=1;i<=count;i++)
            {
                ddl.Items.Add(i.ToString());
            }
        }
        #endregion

        InitEvent#region InitEvent
        private void bt_click(object sender , EventArgs e)
        {
            this.PageSize = Convert.ToInt32(tb.Text);
            ddl.Items.Clear();
            
            this.CurrentPageIndex = 0;
            BindGrid();
            initDDL();
        }

        private void PrevPage_click(object sender , EventArgs e)
        {
        
            int con  = this.CurrentPageIndex;
            if(CurrentPageIndex-1<0)
            {}
            else
            {
                CurrentPageIndex = con-1;
            }

            int tempIndex = CurrentPageIndex + 1;
        
            ddl.SelectedValue = tempIndex.ToString();
            
            BindGrid();            
            
        }

        private void NextPage_click(object sender , EventArgs e)
        {
            int con = this.CurrentPageIndex;
            
             
            if(CurrentPageIndex>=this.PageCount-1)
            {                
            }
            else
            {
                this.CurrentPageIndex = con + 1 ;                
            }
            
            
            int tempIndex = CurrentPageIndex + 1  ;
            
            ddl.SelectedValue = tempIndex.ToString();
        
            BindGrid();
        }

        private void ddl_SelectedIndexChanged(object sender , EventArgs e)
        {
            int curri = Convert.ToInt32(ddl.SelectedValue) - 1;
            this.CurrentPageIndex = curri;
            
            BindGrid();
        }

        #endregion


        GridFunction#region GridFunction

        private void BindGrid()
        {
            try
            {
                this.DataSource = DT;        
                this.DataBind();
            }
            catch(Exception ex)
            {
                SaveLog(ex.ToString());
            }
        }

        #endregion

        Util#region Util
        private void SaveLog(string strLog)
        {
            string strPath="";
            strPath = @"D:";
            strPath += @"\iTecDataGridLog.txt";
            System.IO.FileStream  fs = new System.IO.FileStream(strPath,System.IO.FileMode.OpenOrCreate,System.IO.FileAccess.Write);
            System.IO.StreamWriter sw = new System.IO.StreamWriter(fs);
            sw.BaseStream.Seek(0,System.IO.SeekOrigin.End);
            sw.WriteLine(strLog);
            sw.Flush();
            sw.Close();
            fs.Close();
        }
        #endregion

    
    }
}