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.net分頁控件

public class CPager2 : WebControl

{

[Bindable(true)]

[Category("Appearance")]

[DefaultValue("")]

[Localizable(true)]

public CPager2()

{

FirstImage = "../image/backward24.gif";

PreviousImage = "../image/back24.gif";

NextImage = "../image/next24.gif";

EndImage = "../image/forward24.gif";

FirstImage2 = "../image/backward24-gray.gif";

PreviousImage2 = "../image/back24-gray.gif";

NextImage2 = "../image/next24-gray.gif";

EndImage2 = "../image/forward24-gray.gif";

CreatePage();

}

#region 創始

private void CreatePage()

{

this.CssClass = "Page2";

//第一頁

ImageButton FirstBtn = new ImageButton();

FirstBtn.ID = "First";

FirstBtn.CommandName = "First";

FirstBtn.CssClass = "PageButton";

FirstBtn.ImageUrl = FirstImage;

this.Controls.Add(FirstBtn);

FirstBtn.Enabled = false;

FirstBtn.Command += new CommandEventHandler(Button_Command);

ImageButton preBtn = new ImageButton();

preBtn.ID = "Previous";

preBtn.CommandName = "Previous";

preBtn.CssClass = "PageButton";

preBtn.ImageUrl = PreviousImage;

this.Controls.Add(preBtn);

preBtn.Enabled = false;

preBtn.Command += new CommandEventHandler(Button_Command);

//----------------------------------------------------------------------------------------------------------------

//下一頁

ImageButton nextBtn = new ImageButton();

nextBtn.ID = "Next";

nextBtn.CommandName = "Next";

nextBtn.CssClass = "PageButton";

this.Controls.Add(nextBtn);

nextBtn.ImageUrl = NextImage;

nextBtn.Command += new CommandEventHandler(Button_Command);

ImageButton EndBtn = new ImageButton();

EndBtn.ID = "End";

EndBtn.CommandName = "End";

EndBtn.CssClass = "PageButton";

EndBtn.ImageUrl = EndImage;

this.Controls.Add(EndBtn);

EndBtn.Command += new CommandEventHandler(Button_Command);

DropDownList drp = new DropDownList();

drp.AutoPostBack = true;

drp.ID = "ddlGo";

drp.CssClass = "PageGo";

this.Controls.Add(drp);

drp.SelectedIndexChanged += new EventHandler(drp_SelectedIndexChanged);

}

#region Command

void Button_Command(object sender, CommandEventArgs e)

{

PageChangedEventArgs ex = new PageChangedEventArgs();

ex.OldPageIndex = PageIndex;

switch (e.CommandName)

{

case "First":

PageIndex = 0;

break;

case "Next":

PageIndex = PageIndex + 1;

break;

case "Previous":

PageIndex = PageIndex - 1;

break;

case "End":

PageIndex = PageTotal - 1;

break;

}

PageButtonStatus();

ex.NewPageIndex = PageIndex;

OnPageIndexChange(ex);

}

#endregion

#region 設置狀態

private void PageButtonStatus()

{

if (PageIndex <= 0)

{

((ImageButton)this.FindControl("First")).Enabled = false;

((ImageButton)this.FindControl("Previous")).Enabled = false;

((ImageButton)this.FindControl("First")).ImageUrl = FirstImage2;

((ImageButton)this.FindControl("Previous")).ImageUrl = PreviousImage2;

}

else

{

((ImageButton)this.FindControl("First")).Enabled = true;

((ImageButton)this.FindControl("Previous")).Enabled = true;

((ImageButton)this.FindControl("First")).ImageUrl = FirstImage;

((ImageButton)this.FindControl("Previous")).ImageUrl = PreviousImage;

}

if (PageIndex >= PageTotal - 1)

{

((ImageButton)this.FindControl("Next")).Enabled = false;

((ImageButton)this.FindControl("End")).Enabled = false;

((ImageButton)this.FindControl("Next")).ImageUrl = NextImage2;

((ImageButton)this.FindControl("End")).ImageUrl = EndImage2;

}

else

{

((ImageButton)this.FindControl("Next")).Enabled = true;

((ImageButton)this.FindControl("End")).Enabled = true;

((ImageButton)this.FindControl("End")).ImageUrl = EndImage;

((ImageButton)this.FindControl("Next")).ImageUrl = NextImage;

}

DropDownList ddlGo = (DropDownList)FindControl("ddlGo");

ddlGo.Items.Clear();

for (int i = 1; i <=PageTotal; i++)

{

ddlGo.Items.Add(i.ToString());

}

if(PageTotal>0)

ddlGo.SelectedIndex = PageIndex;

}

#endregion

void drp_SelectedIndexChanged(object sender, EventArgs e)

{

PageChangedEventArgs ex = new PageChangedEventArgs();

ex.OldPageIndex = PageIndex;

DropDownList ddlGo = (DropDownList)FindControl("ddlGo");

PageIndex = ddlGo.SelectedIndex;

PageButtonStatus();

ex.NewPageIndex = PageIndex;

OnPageIndexChange(ex);

}

#endregion

#region 屬性

[Description("當前頁")]

public int PageIndex

{

get

{

int temp = 0;

if (ViewState["PageIndex"] != null)

temp = Convert.ToInt32(ViewState["PageIndex"]);

return temp;

}

set

{

ViewState["PageIndex"] = value;

}

/// <summary>

/// 設置總頁數

/// </summary>

[Description("總頁數")]

public int PageTotal

{

get

{

if (ViewState["PageTotal"] != null)

return Convert.ToInt32((ViewState["PageTotal"]));

else

return 0;

}

set

{

ViewState["PageTotal"] = value;

this.PageButtonStatus();

}

[Category("設置圖片")]

[Description("第一頁圖片")]

public string FirstImage

{

get

{

string temp = "";

if (ViewState["FirstImage"] != null)

temp = Convert.ToString(ViewState["FirstImage"]);

return temp;

}

set

{

ViewState["FirstImage"] = value;

}

[Category("設置圖片")]

[Description("上一頁圖片")]

public string PreviousImage

{

get

{

string temp = "";

if (ViewState["PriviousImage"] != null)

temp = Convert.ToString(ViewState["PriviousImage"]);

return temp;

}

set

{

ViewState["PriviousImage"] = value;

}

[Category("設置圖片")]

[Description("下一頁圖片")]

public string NextImage

{

get

{

string temp = "";

if (ViewState["NextImage"] != null)

temp = Convert.ToString(ViewState["NextImage"]);

return temp;

}

set

{

ViewState["NextImage"] = value;

}

[Category("設置圖片")]

[Description("末頁圖片")]

public string EndImage

{

get

{

string temp = "";

if (ViewState["EndImage"] != null)

temp = Convert.ToString(ViewState["EndImage"]);

return temp;

}

set

{

ViewState["EndImage"] = value;

}

[Category("設置圖片")]

[Description("第一頁圖片")]

public string FirstImage2

{

get

{

string temp = "";

if (ViewState["FirstImage2"] != null)

temp = Convert.ToString(ViewState["FirstImage2"]);

return temp;

}

set

{

ViewState["FirstImage2"] = value;

}

[Category("設置圖片")]

[Description("上一頁圖片")]

public string PreviousImage2

{

get

{

string temp = "";

if (ViewState["PriviousImage2"] != null)

temp = Convert.ToString(ViewState["PriviousImage2"]);

return temp;

}

set

{

ViewState["PriviousImage2"] = value;

}

[Category("設置圖片")]

[Description("下一頁圖片")]

public string NextImage2

{

get

{

string temp = "";

if (ViewState["NextImage2"] != null)

temp = Convert.ToString(ViewState["NextImage2"]);

return temp;

}

set

{

ViewState["NextImage2"] = value;

}

[Category("設置圖片")]

[Description("末頁圖片")]

public string EndImage2

{

get

{

string temp = "";

if (ViewState["EndImage2"] != null)

temp = Convert.ToString(ViewState["EndImage2"]);

return temp;

}

set

{

ViewState["EndImage2"] = value;

}

#endregion

#region 事件

public delegate void PageChangedEventHandler(object sender, PageChangedEventArgs e);

public event PageChangedEventHandler PageIndexChanged;

protected virtual void OnPageIndexChange(PageChangedEventArgs e)

{

if (PageIndexChanged != null)

PageIndexChanged(this, e);

}

#endregion

}

posted on 2008-03-23 14:58 飛天閱讀(344) 評論(0) 編輯收藏引用所屬分類: Web

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