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.net中一些所封装的类

类别: ASP.NET教程

using System;
using System.IO;
using System.Web;
using System.Data;
using System.Web.UI;
using System.Collections;
using System.Web.UI.WebControls;
using Microsoft.Web.UI.WebControls;
using System.Drawing;
using System.Text;
using OWC;

namespace JSL.MVC.Page
{
/// <summary>
/// Controls 的摘要说明。
/// </summary>
public class Controls
{
private Controls()
{
}
#region string
public static string Encrypto(string Source)
{
System.Security.Cryptography.HashAlgorithm HashCryptoService;
HashCryptoService = new System.Security.Cryptography.SHA1Managed();

byte[] bytIn = System.Text.UTF8Encoding.UTF8.GetBytes(Source);
byte[] bytOut = HashCryptoService.ComputeHash(bytIn);
return Convert.ToBase64String(bytOut);
}
#endregion

#region BaseDataList
public void BindBaseList(System.Web.UI.WebControls.BaseDataList bdl_object,DataSet ds, string tbName)
{
bdl_object.DataSource=ds.Tables[tbName];
bdl_object.DataBind();
}

public void BindBaseList(System.Web.UI.WebControls.BaseDataList bdl_object,DataTable dt)
{
bdl_object.DataSource=dt;
bdl_object.DataBind();
}
#endregion

#region DropDownList
public static void CreateDropDownList(DropDownList ddl_object, DataTable dt, string s_text,string s_value)
{
ddl_object.DataSource = dt;
ddl_object.DataTextField = s_text;
ddl_object.DataValueField = s_value;
ddl_object.DataBind();
}

public static void CreateDropDownList(DropDownList ddl_object, DataSet ds, string s_text,string s_value)
{
ddl_object.DataSource = ds;
ddl_object.DataTextField = s_text;
ddl_object.DataValueField = s_value;
ddl_object.DataBind();
}

public static void CreateDropDownList(DropDownList ddl_object, string s_text, string s_value)
{
ListItem li = new ListItem(s_text, s_value);
ddl_object.Items.Add(li);
}

public static void CreateDropDownList(DropDownList ddl_object, string[] s_text, string[] s_value)
{
for (int i = 0; i < s_text.Length; i++)
{
ListItem li = new ListItem(s_text[i],s_value[i]);
ddl_object.Items.Add(li);
}
}

public static void CopyDropDownList(DropDownList ddl_source, DropDownList ddl_target)
{
ddl_target.Items.Clear();
ddl_target.DataTextField = ddl_source.DataTextField;
ddl_target.DataTextFormatString = ddl_source.DataTextFormatString;
ddl_target.DataValueField = ddl_source.DataValueField;
for (int i = 0; i < ddl_source.Items.Count; i++)
{
ddl_target.Items.Add(ddl_source.Items[i]);
}
}

public static void SetDropDownListValue(DropDownList ddl_object, string s_value)
{
foreach(ListItem li in ddl_object.Items)
{
if (li.Value == s_value)
{
ddl_object.SelectedValue = s_value;
break;
}
else
{
ddl_object.SelectedValue = null;
}
}
}

public static void SetDropDownListValue(DropDownList[] ddl_object,string[] s_value)
{
int i = 0;
foreach(DropDownList ddl in ddl_object)
{
SetDropDownListValue(ddl,s_value[i++]);
}
}
#endregion

#region TextBox
protected static void CopyTextBox(TextBox tb_source, TextBox tb_target)
{
tb_target.Text = tb_source.Text;
}

protected static void SetTextBoxValue(TextBox tb_object, string s_value)
{
tb_object.Text = s_value;
}

protected static void SetTextBoxValue(TextBox[] tb_object,string[] s_value)
{
int i = 0;
foreach(TextBox dt in tb_object)
{
SetTextBoxValue(dt,s_value[i++]);
}
}
#endregion

#region TreeView
/// <summary>
/// 创建树形结构
/// </summary>
/// <param name="dt">要传入的数据表</param>
/// <param name="treenodecollection">树结点容器集合</param>
/// <param name="MapNodeData">结点主键</param>
/// <param name="MapText">显示内容</param>
/// <param name="MapNavigateURL">导航路径</param>
/// <param name="ImageURL">图片地址</param>
/// <param name="ParentName">结点父键</param>
/// <param name="RelationOperation">结点过滤关系运算符</param>
/// <param name="ParentValue">运算比较值</param>
/// <param name="ParentValueType">比较值类型</param>
/// <param name="SortExpression">排序方式</param>
/// <param name="bcheckbox">选择框显示与否</param>
/// <param name="MapStatus">选择框的内容</param>
/// <param name="MapTarget">用于树保存时的分层标记</param>
public static void CreateViewTree(DataTable dt, TreeNodeCollection treenodecollection,
string MapNodeData, string MapText, string MapNavigateURL, string ParentName,
string RelationOperation, string ParentValue, string ParentValueType,string SortExpression,
bool bcheckbox, string MapStatus, string MapTarget)
{
if (ParentValueType == "\'") ParentValue = ParentValueType + ParentValue + ParentValueType;

string str = ParentName + RelationOperation + ParentValue;
DataRow[] drs = dt.Select( ParentName + RelationOperation + ParentValue, SortExpression);
foreach(DataRow dr in drs)
{
TreeNode treenode = new TreeNode();
treenode.Text = dr[MapText].ToString();
try
{
treenode.NavigateUrl = dr[MapNavigateURL].ToString();
}
catch{treenode.NavigateUrl = "";}
treenode.CheckBox = bcheckbox;
if (MapTarget != "" && MapTarget != null) treenode.TreeNodeXsltSrc = dr[MapTarget].ToString();
if (treenode.CheckBox)
{
bool bcheck ;
try
{
bcheck = (dr[MapStatus].ToString() == "1");
}
catch{bcheck = false;}
treenode.Checked =bcheck ;
}
string treenodenodedata = treenode.NodeData = dr[MapNodeData].ToString();
treenodecollection.Add(treenode);
if (ParentValueType == "\'") treenodenodedata =ParentValueType+ treenodenodedata + ParentValueType;

DataRow[] tmpdrs = dt.Select(ParentName + RelationOperation + treenodenodedata, SortExpression);
if ( tmpdrs.Length > 0)
{
CreateViewTree(dt,treenode.Nodes,MapNodeData,MapText,MapNavigateURL,ParentName,RelationOperation,treenode.NodeData,ParentValueType,SortExpression,bcheckbox,MapStatus,MapTarget);
}
}
}
#endregion

#region Session
public static bool CheckSession(string CheckSession,System.Web.UI.Page WebPage)
{
bool b=false;
foreach(string sTmp in WebPage.Session.Keys)
{
if (sTmp.Equals(CheckSession))
{
b = true;
break;
}
}
return b;
}

public static void CheckSession(string CheckSession,System.Web.UI.Page WebPage,string ErrorPage)
{
bool b=false;
foreach(string sTmp in WebPage.Session.Keys)
{
if (sTmp.Equals(CheckSession))
{
b = true;
break;
}
}

if (!b) WebPage.Response.Redirect(ErrorPage);
}
#endregion

#region Reponse
public static void ResponsePage(System.Web.UI.Page WebPage,string sUrl,string sChoose)
{
try
{
switch(sChoose)
{
case "1":
WebPage.Response.Write("<script>window.location.href=\'"+sUrl+"\';</script>");
break;
case "2":
WebPage.Server.Transfer(sUrl );
break;
case "3":
WebPage.Response.Redirect(sUrl);
break;
case "debug":
WebPage.Response.Write("<script>alert(\'"+sUrl+"\')</script>");
break;
default :
WebPage.Response.Write(sUrl);
break;
}
}
catch
{
WebPage.Response.Write("Error URL:"+sUrl);
}
}
#endregion

#region Server To Client JAVASCRIPT
public void javaScript(string alert ,System.Web.UI.Page WebPage)
{
WebPage.RegisterStartupScript("script","<script language=javascript>alert(\'"+alert+"\');</script>");
}
#endregion

#region Split DataGrid
public static string[] SplitPage(System.Web.UI.Page CurPage,DataGrid dgSplit,DataTable dtSplit,int iRowsSplitPage )
{
string PAGE_OBJECT = "page"+dgSplit.ID;
string sPage = "1";
int iCurPage = 1;
if (CurPage.Request.QueryString[PAGE_OBJECT]!=null) sPage = CurPage.Request.QueryString[PAGE_OBJECT].ToString();
try { iCurPage = Int32.Parse(sPage); }
catch { iCurPage = 1; }

int start = (int)((iCurPage - 1) * iRowsSplitPage);
if (start < 0) start = 0;
int to = (int)(iCurPage * iRowsSplitPage);

DataView dv = dtSplit.DefaultView;
int iResults = dv.Count;
int a1=0;
int iPageCount = Math.DivRem(iResults,iRowsSplitPage,out a1);
if (a1>0) iPageCount++;
if (iCurPage > iPageCount || iCurPage<= 0) iCurPage = 1;
if (iCurPage == iPageCount) to = dv.Count;

DataTable dt = dv.Table.Clone();
DataRow dr;
for(int i=start;i<iResults;i++)
{
if(i<to)
{
dr = dt.NewRow();
for(int k=0;k<dv.Table.Columns.Count;k++)
{
// if (k==0)
// dr[k] = iResults - i;
// else
dr[k] = dv.Table.Rows[i][k];
}
dt.Rows.Add(dr);
}
}
dt.AcceptChanges();

DataView dvResult = new DataView(dt);
dgSplit.DataSource = dvResult;
dgSplit.DataBind();
// dgSplit.Visible = !(dvResult.Count == 0);

string strNav = "";
int iEndPage = iPageCount;
strNav += "<a href=\'?"+PAGE_OBJECT+"="+ 1.ToString() + "\'>首页</a> ";
if (iCurPage>1)
{
strNav += "<a href=\'?"+PAGE_OBJECT+"="+ (iCurPage - 1).ToString() + "\'>上页</a> ";
}
else
{
strNav += " 上页 ";
}
if (iCurPage>11)
{
strNav += "<a href=\'?"+PAGE_OBJECT+"=1\'>1</a> ...";
}
if (iPageCount > iCurPage + 10) iEndPage = iCurPage + 10;
for (int i = iCurPage - 10; i < iEndPage + 1; i++)
{
if(i>=1)
{
if (i==iCurPage)
{
strNav +="<font color=#990000><strong>"+ i.ToString() + "</strong></font> ";
}
else
{
strNav += "<a href=\'?"+PAGE_OBJECT+"="+ i.ToString() + "\'>"+ i.ToString() +"</a> ";
}
}
}

if ((iCurPage+10) < iPageCount)
strNav += "... <a href=\'?"+PAGE_OBJECT+"="+ iPageCount.ToString() + "\'>"+ iPageCount.ToString() + "</a>";
if (iCurPage < iPageCount)
{
strNav += " <a href=\'?"+PAGE_OBJECT+"="+ (iCurPage+1).ToString() + "\'>下页</a> ";
}
else
{
strNav += " 下页 ";
}
strNav += " <a href=\'?"+PAGE_OBJECT+"="+ (iPageCount).ToString() + "\'>末页</a> ";

string[] strNavResult = new string[2];
strNavResult[0] = strNav;
strNavResult[1] = "[共"+ iResults.ToString() +"条][第"+ (start+1).ToString() +"-"+ to.ToString() +"条][共"+ iPageCount.ToString() +"页]" ;

return strNavResult;
}
#endregion

#region DataGrid To Excel
public static void DataGrid2Excel(DataGrid dg, string filename)
{
OWC.SpreadsheetClass xlsheet = new SpreadsheetClass();
int ihead = 0;
foreach(DataGridColumn dgc in dg.Columns)
{
xlsheet.ActiveSheet.Cells[1, ihead + 1] = dgc.HeaderText;
// xlsheet.get_Range(xlsheet.Cells[1, 1], xlsheet.Cells[1, i + 1]).Font.Bold = true;
// xlsheet.get_Range(xlsheet.Cells[1, 1], xlsheet.Cells[1, i + 1]).Font.Color = "red";
ihead++;
}

int icols = dg.Items[0].Cells.Count;
for (int j = 0; j < dg.Items.Count; j++)
{
for (int i = 0; i < icols; i++)
{
xlsheet.ActiveSheet.Cells[j + 2, i + 1] = dg.Items[j].Cells[i].Text.Replace(" "," ");
}
}

try
{
//System.Web.HttpContext.Current.Server.MapPath
xlsheet.ActiveSheet.Export(filename, OWC.SheetExportActionEnum.ssExportActionOpenInExcel);
}
catch
{
return;
}
}
#endregion

#region HostName
public static string GetHostName()
{
return System.Net.Dns.GetHostName();
}

public static System.Net.IPHostEntry GetHostByName(string hostname)
{
return System.Net.Dns.GetHostByName(hostname);
}

#endregion

#region Process
private void KillProcess(string processName)
{
System.Diagnostics.Process myproc= new System.Diagnostics.Process();
//得到所有打开的进程
try
{
foreach (System.Diagnostics.Process thisproc in System.Diagnostics.Process.GetProcessesByName(processName))
{
if(!thisproc.CloseMainWindow())
{
thisproc.Kill();
}
}
}
catch(Exception Exc)
{
;
}
}
#endregion

#region Execel
/// <summary>
/// Class to export a number of web controls to Excel.
/// Pass BuildExcelTable your control, then call ExportToBrowser() to write down to the browser.
/// This will open a new instance of Excel.
/// If you want to open the Excel file in the current browser window, comment out the Response.AddHEader line.
/// </summary>
public class ExcelWriter
{
protected string m_szExcelHtnml;
private string szFileName;
private bool bStripBreaks;

public void BuildExcelTable(object DG)
{
//Header Styles
StringWriter sw = new StringWriter();
HtmlTextWriter ht = new HtmlTextWriter(sw);

string sObjectTypeName = DG.GetType().Name.ToString();
switch (sObjectTypeName)
{
case "DataGrid":
((DataGrid)DG).ShowHeader = true;
((DataGrid)DG).RenderControl(ht);
break;
case "DataList":
((DataList)DG).RenderControl(ht);
break;
case "TextBox":
((TextBox)DG).RenderControl(ht);
break;
case "Label":
ht.Write(((Label)DG).Text);
break;
case "TableRow":
ht.Write("<table>");
((TableRow)DG).RenderControl(ht);
ht.Write("</table>");
break;
case "Table":
((Table)DG).RenderControl(ht);
break;
default:
break;
}

m_szExcelHtnml += sw.ToString();

}

public void ExportToBrowser()
{
if(szFileName == "" || szFileName == null)
{
szFileName = "ExcelFile.xls";
}

if(bStripBreaks)
{
m_szExcelHtnml = m_szExcelHtnml.Replace("<br>", " ");
m_szExcelHtnml = m_szExcelHtnml.Replace("<BR>", " ");
}
HttpContext.Current.Response.Clear();
HttpContext.Current.Response.ClearHeaders();
HttpContext.Current.Response.AddHeader("Content-Disposition", "attachment; filename=" + szFileName);
HttpContext.Current.Response.ContentType = "application/vnd.ms-excel";
HttpContext.Current.Response.Write(m_szExcelHtnml);
HttpContext.Current.Response.Flush();
HttpContext.Current.Response.End();
}

public string FileName
{
get
{
return szFileName;
}
set
{
szFileName = value;
}
}

public bool StripBreakTags
{
get
{
return bStripBreaks;
}
set
{
bStripBreaks = value;
}
}
}
#endregion

#region PDF
public class PDFGenerator
{
static float pageWidth = 594.0f;
static float pageDepth = 828.0f;
static float pageMargin = 30.0f;
static float fontSize = 20.0f;
static float leadSize = 10.0f;
static StreamWriter pPDF=new StreamWriter("E://myPDF.pdf");
static MemoryStream mPDF= new MemoryStream();
static void ConvertToByteAndAddtoStream(string strMsg)
{
Byte[] buffer=null;
buffer=ASCIIEncoding.ASCII.GetBytes(strMsg);
mPDF.Write(buffer,0,buffer.Length);
buffer=null;
}

static string xRefFormatting(long xValue)
{
string strMsg =xValue.ToString();
int iLen=strMsg.Length;
if (iLen<10)
{
StringBuilder s=new StringBuilder();
int i=10-iLen;
s.Append(\'0\',i);
strMsg=s.ToString() + strMsg;
}
return strMsg;
}

static void Main(string[] args)
{
ArrayList xRefs=new ArrayList();
//Byte[] buffer=null;
float yPos =0f;
long streamStart=0;
long streamEnd=0;
long streamLen =0;
string strPDFMessage=null;
//PDF文档头信息
strPDFMessage="%PDF-1.1/n";
ConvertToByteAndAddtoStream(strPDFMessage);

xRefs.Add(mPDF.Length);
strPDFMessage="1 0 obj/n";
ConvertToByteAndAddtoStream(strPDFMessage);
strPDFMessage="<< /Length 2 0 R >>/n";
ConvertToByteAndAddtoStream(strPDFMessage);
strPDFMessage="stream/n";
ConvertToByteAndAddtoStream(strPDFMessage);
////////PDF文档描述
streamStart=mPDF.Length;
//字体
strPDFMessage="BT/n/F0 " + fontSize +" Tf/n";
ConvertToByteAndAddtoStream(strPDFMessage);
//PDF文档实体高度
yPos = pageDepth - pageMargin;
strPDFMessage=pageMargin + " " + yPos +" Td/n" ;
ConvertToByteAndAddtoStream(strPDFMessage);
strPDFMessage= leadSize+" TL/n" ;
ConvertToByteAndAddtoStream(strPDFMessage);

//实体内容
strPDFMessage= "(http://www.wenhui.org)Tj/n" ;
ConvertToByteAndAddtoStream(strPDFMessage);
strPDFMessage= "ET/n";
ConvertToByteAndAddtoStream(strPDFMessage);
streamEnd=mPDF.Length;

streamLen=streamEnd-streamStart;
strPDFMessage= "endstream/nendobj/n";
ConvertToByteAndAddtoStream(strPDFMessage);
//PDF文档的版本信息
xRefs.Add(mPDF.Length);
strPDFMessage="2 0 obj/n"+ streamLen + "/nendobj/n";
ConvertToByteAndAddtoStream(strPDFMessage);

xRefs.Add(mPDF.Length);
strPDFMessage="3 0 obj/n<</Type/Page/Parent 4 0 R/Contents 1 0 R>>/nendobj/n";
ConvertToByteAndAddtoStream(strPDFMessage);

xRefs.Add(mPDF.Length);
strPDFMessage="4 0 obj/n<</Type /Pages /Count 1/n";
ConvertToByteAndAddtoStream(strPDFMessage);
strPDFMessage="/Kids[/n3 0 R/n]/n";
ConvertToByteAndAddtoStream(strPDFMessage);
strPDFMessage="/Resources<</ProcSet[/PDF/Text]/Font<</F0 5 0 R>> >>/n";
ConvertToByteAndAddtoStream(strPDFMessage);
strPDFMessage="/MediaBox [ 0 0 "+ pageWidth + " " + pageDepth + " ]/n>>/nendobj/n";
ConvertToByteAndAddtoStream(strPDFMessage);

xRefs.Add(mPDF.Length);
strPDFMessage="5 0 obj/n<</Type/Font/Subtype/Type1/BaseFont/Courier/Encoding/WinAnsiEncoding>>/nendobj/n";
ConvertToByteAndAddtoStream(strPDFMessage);

xRefs.Add(mPDF.Length);
strPDFMessage="6 0 obj/n<</Type/Catalog/Pages 4 0 R>>/nendobj/n";
ConvertToByteAndAddtoStream(strPDFMessage);

streamStart=mPDF.Length;
strPDFMessage="xref/n0 7/n0000000000 65535 f /n";
for(int i=0;i<xRefs.Count;i++)
{
strPDFMessage+=xRefFormatting((long) xRefs[i])+" 00000 n /n";
}
ConvertToByteAndAddtoStream(strPDFMessage);
strPDFMessage="trailer/n<</n/Size "+ (xRefs.Count+1)+"/n/Root 6 0 R/n>>/n";
ConvertToByteAndAddtoStream(strPDFMessage);

strPDFMessage="startxref/n" + streamStart+"/n%%EOF/n";
ConvertToByteAndAddtoStream(strPDFMessage);
mPDF.WriteTo(pPDF.BaseStream);

mPDF.Close();
pPDF.Close();
}
}

#endregion

#region Up Load Fille
public static string UpFile(System.Web.UI.HtmlControls.HtmlInputFile infile, string savefilepath, string savefilename, string choose)
{
string filename = infile.PostedFile.FileName;
if (infile.PostedFile!=null && infile.Value != "" )
{
int i;
switch (choose)
{
case ".":
i = filename.LastIndexOf(".");
savefilename += filename.Substring(i);
break;
default:
i = filename.LastIndexOf("/");
if (i <= 0) i = filename.LastIndexOf("//");
savefilename += choose + filename.Substring(i + 1);
break;
}
if (savefilepath.EndsWith("/") || savefilepath.EndsWith("//"))
filename = savefilepath + savefilename;
else
filename = savefilepath + "/" + savefilename;
savefilepath = System.Web.HttpContext.Current.Server.MapPath(filename);
infile.PostedFile.SaveAs(savefilepath);
return filename;
}
else
{
return null;
}
}
#endregion
}
}

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