60分在线等，怎么给用户控件添加事件？

Question

实际是这样的，我想写一个分页控件，有首页、尾页、上一页和下一页 四个Button，这个用户控件有一个自定义事件onPageChanging，可以在调用它的页面上使用。 不知道大家看明白没有，就是好像Button控件，是有Onclick事件， 当点击时触发这个事件，   我是想让这个用户控件也有个类似的事件，不知道怎么做

Answer 1

自己写个事件，然后在另一个事件添加此事件。例如：
private void ComboBox_SelectedIndexChanged(object sender, EventArgs e)
        {
          ......ComboBox自定义事件
        }
private void dgvChangeLogTableMain_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
        {
((System.Windows.Forms.ComboBox)e.Control).SelectedIndexChanged += new EventHandler(ComboBox_SelectedIndexChanged);//添加ComboBox自定义事件
        }

Answer 2

哈哈 ，不久前写了一个分页控件 PagerBar.ascx：
PagerBar.ascx 代码：<%@ Control Language="C#" AutoEventWireup="true" CodeFile="PagerBar.ascx.cs" Inherits="分页自定义控件_PagerBar" %>
<table cellpadding="3" cellspacing="0" style="background: #D2E5F8; font-size: 12px;
    border: solid 1px green;">
    <tr>
        <td valign="bottom">
            &nbsp; 共<asp:Label ID="lTotalCount" runat="server" Text="0" Font-Bold="True" ForeColor="Red"
                Font-Size="12px"></asp:Label>条&nbsp;&nbsp;共<asp:Label ID="lTotalPages" runat="server"
                    Text="0" Font-Bold="True" ForeColor="Red" Font-Size="12px"></asp:Label>页&nbsp;&nbsp;每页<asp:Label
                        ID="lPageSize" runat="server" Text="5" Font-Bold="True" ForeColor="Red" Font-Size="12px"></asp:Label>条&nbsp;&nbsp;当前第<asp:Label
                            ID="lCurrentPage" runat="server" Text="1" Style="color: #FF3300; font-weight: 700"
                            Font-Bold="True" Font-Size="12px"></asp:Label>页&nbsp;&nbsp;&nbsp;
            &nbsp;
            <asp:Button ID="btFirst" runat="server" Text="首页" CommandName="first" OnCommand="PaggingButton_Onclick"
                Width="61px" />
            &nbsp;<asp:Button ID="btPrevious" runat="server" Text="前页" CommandName="previous"
                OnCommand="PaggingButton_Onclick" Width="61px" />
            &nbsp;<asp:Button ID="btNext" runat="server" Text="后页" CommandName="next" OnCommand="PaggingButton_Onclick"
                Width="61px" />
            &nbsp;<asp:Button ID="btLast" runat="server" Text="末页" CommandName="last" OnCommand="PaggingButton_Onclick"
                Width="61px" />&nbsp;&nbsp;&nbsp; 跳到<asp:TextBox ID="txtPage" runat="server" Font-Size="12px"
                    Width="31px"></asp:TextBox>页<asp:Button ID="btngo" runat="server" CommandName="go"
                        Font-Size="12px" OnCommand="PaggingButton_Onclick" Text="GO" Width="40px" />
            &nbsp;
        </td>
    </tr>
</table>
后台代码PagerBar.ascx ：    public event EventHandler DataBind = null;    protected void Page_Load(object sender, EventArgs e)
    {    }    //记录总数
    public int TotalCount
    {
        get { return Convert.ToInt32(lTotalCount.Text.Trim()); }
        set { lTotalCount.Text = value.ToString(); }
    }    //总页数
    public int TotalPages
    {
        get { return Convert.ToInt32(lTotalPages.Text.Trim()); }
        set
        {
            if (value <= 1)
            {
                //如果没有记录就 隐藏翻页控件
                btFirst.Enabled = false;
                btLast.Enabled = false;
                btPrevious.Enabled = false;
                btNext.Enabled = false;
                btngo.Enabled = false;
            }
            else
            {
                btFirst.Enabled = true;
                btLast.Enabled = true;
                btPrevious.Enabled = true;
                btNext.Enabled = true;
                btngo.Enabled = true;
            }            if (CurrentPageNo == 1)//第一页
            {
                btFirst.Enabled = false;
                btPrevious.Enabled = false;
            }
            if (CurrentPageNo == value) //最后一页
            {
                btNext.Enabled = false;
                btLast.Enabled = false;
            }
            lTotalPages.Text = value.ToString();
        }
    }    //当前页
    public int CurrentPageNo
    {
        get { return Convert.ToInt32(lCurrentPage.Text.Trim()); }
        set { lCurrentPage.Text = value.ToString(); }
    }    //分页数
    public int PageSize
    {
        get { return Convert.ToInt32(lPageSize.Text.Trim()); }
        set { lPageSize.Text = value.ToString(); }
    }    //查询语句
    public string SelectCommand
    {
        get { return ViewState["sql"].ToString(); }
        set { ViewState["sql"] = value; }
    }    //记录集
    private DataTable _datasource;
    public DataTable DataTableResult
    {
        get { return _datasource; }
    }    //获取数据
    public void GetData()
    {
        int pc = 0;
        int rc = 0;        this._datasource = SqlHelper.PaggingDataSource(this.SelectCommand, this.CurrentPageNo, PageSize, ref pc, ref rc);
        this.TotalPages = pc;
        this.TotalCount = rc;        if (_datasource != null)
        {
            DataBind(null, null);
        }    }    public void PaggingButton_Onclick(object sender, CommandEventArgs e)
    {
        switch (e.CommandName)
        {
            case "first":
                this.CurrentPageNo = 1;
                break;
            case "previous":
                this.CurrentPageNo--;
                if (this.CurrentPageNo < 1)
                    this.CurrentPageNo = 1;
                break;
            case "next":
                this.CurrentPageNo++;
                if (this.CurrentPageNo > this.TotalPages) this.CurrentPageNo = this.TotalPages;
                break;
            case "last":
                this.CurrentPageNo = this.TotalPages;
                break;
            case "go":
                bool b = true;
                try
                {
                    int i = Convert.ToInt32(txtPage.Text.Trim());
                    b = true;
                }
                catch
                {
                    b = false;
                }
                if (b == true)
                {
                    int cP = Convert.ToInt32(txtPage.Text.Trim());
                    if (cP > this.TotalPages || cP < 1)
                    {
                        Response.Write("<script>alert('页码有误！！')</script>");
                    }
                    else
                    {
                        this.CurrentPageNo = Convert.ToInt32(txtPage.Text.Trim());
                    }
                }                break;
        }        GetData();
    }

Answer 3

调用分页控件：
把控件拖到页面即可，后台调用代码：    protected void Page_Load(object sender, EventArgs e)
    {
        PagerBar1.DataBind += new EventHandler(PagerBar1_DataBind);//订阅分页控件中的翻页事件
        if (!IsPostBack)
        {
            PagerBar1.PageSize = 2; //分页数
            PagerBar1.CurrentPageNo = 1; //当前页
            PagerBar1.SelectCommand = "select * from users";
            PagerBar1.GetData();        }
    }    void PagerBar1_DataBind(object sender, EventArgs e)
    {
        GridView1.DataSource = PagerBar1.DataTableResult;
        GridView1.DataBind();
    }
    protected void btnSearch_Click(object sender, EventArgs e)
    {
        PagerBar1.SelectCommand = "";
        PagerBar1.SelectCommand = "select * from users where uname like '%" + txtName.Text.Trim() + "%'";
        PagerBar1.GetData();
        PagerBar1.CurrentPageNo = 1; //当前页
    }    //在填充分页中 排序的另一种方法
    protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.FindControl("lblSort") !=null)
        {
            Label Sortid = e.Row.FindControl("lblSort") as Label;
            int s = PagerBar1.PageSize * (PagerBar1.CurrentPageNo-1) + e.Row.RowIndex + 1;
            Sortid.Text = s.ToString();
        }
    }

Answer 4

调用的分页控件ID是：PagerBar1protected void btnSearch_Click(object sender, EventArgs e) 为页面的搜索功能

Answer 5

先定义个委托和事件
public delegate void onClick(string StrMachineCode);
public event onClick picClick;
然后在你想要实现的事件里面去调用上面定义的事件。
private void button1_Click(object sender, EventArgs e)
{
       if(this.picClick!=null)
       this.picClick(StrMachineCode);
}调用的时候,直接在
object.picClick += new object.onClick(object_picClick);
就可以完成了。祝你好运！

Answer 6

//这个是对ComboBox控件(DataGridView中的ComboBox)自定义事件
private void ComboBox_SelectedIndexChanged(object sender, EventArgs e)
  {
  ......
  }
//在DataGridView的DataGridView_EditingControlShowing事件中添加上面ComboBox控件自定义的事件
private void DataGridView_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
  {
((System.Windows.Forms.ComboBox)e.Control).SelectedIndexChanged += new EventHandler(ComboBox_SelectedIndexChanged);//添加ComboBox自定义事件
  }不知道是不是你想要的，
asp.net的话可以在后台Page_Load里给控件添加事件
btn.Attributes.Add("onclick","onclick()");

Answer 7

还有一个方法补上：
SqlHelper.PaggingDataSource(...)
    /// <summary>
    /// 获取分页数据源
    /// </summary>
    /// <param name="sql"></param>
    /// <param name="startCount"></param>
    /// <param name="pageSize"></param>
    /// <returns></returns>
    public static DataTable PaggingDataSource(string sql, int currentPage, int pageSize, ref int pageCount, ref int resourtCount)
    {
        SqlConnection conn = new SqlConnection(dbTestConn);
        SqlCommand command = new SqlCommand();
        command.Connection = conn;        //查询数据
        command.CommandText = sql;
        SqlDataAdapter adapter = new SqlDataAdapter();
        adapter.SelectCommand = command;
        DataTable dt = new DataTable();
        DataTable dtCount = new DataTable();
        try
        {
            adapter.Fill(dtCount); //记录总数
            resourtCount = dtCount.Rows.Count > 0 ? dtCount.Rows.Count : 0;            int begin = (currentPage - 1) * pageSize; //当前记录索引（每页的第一个记录的索引）
            adapter.Fill(begin, pageSize, dt);            //计算总页数
            pageCount = resourtCount == 0 ? 1 : (int)Math.Ceiling((double)resourtCount / pageSize);
            return dt;        }
        catch (SqlException ex)
        {
            //_Message = ex.Message;
            return null;
        }
        finally
        {
            conn.Close();; //关闭数据库连接        }
    }

Answer 8

貌似web分页有很多源代码，如果是winform的话，
只要实现上一页，下一页等按钮的事件 实现即可。

Answer 9

看aspnetpager控件
public event EventHanlder PageChanged
{
add{Events.AddHandler（EventPageChange,value);
}
remove
{Events.RemoveHanlder(EventPageChange,value);}
}
PUBLIC void OnPageChanged(EventArge e)
{
}

Answer 10

非常感谢各位的帮助，尤其感谢LXH060204童鞋，结贴散分。