using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.IO;
using System.Data;

namespace DH.WorkFlow.Platform.WorkSpace.WebControls
{
public partial class UC_Attachment : System.Web.UI.UserControl
    {
public DataTable AttachmentTable
        {
get
            {
if (ViewState["AttachmentTable"] != null)
                {
return ViewState["AttachmentTable"] as DataTable;
                }
else
                {
                    DataTable dt = new DataTable();
                    dt.Columns.Add("AttName");
                    dt.Columns.Add("AttReName");
                    dt.Columns.Add("UploadBy");
                    dt.Columns.Add("UploadDate");
                    dt.Columns.Add("AttFullPath");
                    dt.Columns.Add("AttRemarks");
return dt;
                }
            }
set { ViewState["AttachmentTable"] = value; }
        }

protected void Page_Load(object sender, EventArgs e)
        {

        }

#region 上传附件
protected void AddAttachment_Click(object sender, EventArgs e)
        {
int fileLength = FileUpload1.PostedFile.ContentLength;
string fileName = FileUpload1.FileName;
string fileType = fileName.Substring(fileName.LastIndexOf('.') + 1, FileUpload1.FileName.Length - fileName.LastIndexOf('.') - 1);
string[] arrTypes = new string[] { "chm", "doc", "docx", "txt", "text", "png", "mht", "xls", "xlsx", "ppt", "pptx", "jpg", "gif" };
if (fileLength < 0)
            {
                AlertMessage("上传文件为空或者文件大小为0！", string.Empty);
return;
            }
if (fileLength > (10 * 1024 * 1024))
            {
                AlertMessage("上传文件必须小于10M！", string.Empty);
return;
            }
if (!arrTypes.Contains(fileType))
            {
                AlertMessage("上传文件格式有误！", string.Empty);
return;
            }

try
            {
string uploadPath = System.Configuration.ConfigurationManager.AppSettings["UploadPath"];
if (!Directory.Exists(uploadPath))
                    Directory.CreateDirectory(uploadPath);
string strReFileName = DateTime.Now.ToString("yyMMddHHmmssfff") + FileUpload1.FileName;
string strFileFullPath = uploadPath + strReFileName;
                FileUpload1.SaveAs(strFileFullPath);

using (DataTable dt = GetAttachmentTable())
                {
                    DataRow row = dt.NewRow();
                    row["AttName"] = FileUpload1.FileName;
                    row["AttReName"] = strReFileName;
                    row["UploadBy"] = DH.WF.BaseFramework.Organizations.Employee.Current.NameWithDomainName;
                    row["UploadDate"] = DateTime.Now.ToString("yyyy-MM-dd");
                    row["AttFullPath"] = strFileFullPath;
                    row["AttRemarks"] = string.Empty;
                    dt.Rows.Add(row);
                    BindAttachment(dt);
                }
            }
catch (Exception ex)
            {
                AlertMessage("文件上传过程中出现错误：" + ex.Message, string.Empty);
            }
        }
private DataTable GetAttachmentTable()
        {
return AttachmentTable;
        }
private void BindAttachment(DataTable dt)
        {
            AttachmentTable = dt;

            rptAttachment.DataSource = dt;
            rptAttachment.DataBind();
        }
protected void rptAttachment_ItemCommand(object sender, RepeaterCommandEventArgs e)
        {
if (e.CommandName == "DeleAtt")
            {
using (DataTable dt = GetAttachmentTable())
                {
                    DataRow row = dt.Rows[e.Item.ItemIndex];
string strFileFullPath = row["AttFullPath"].ToString();
if (File.Exists(strFileFullPath))
                        File.Delete(strFileFullPath);

                    dt.Rows.RemoveAt(e.Item.ItemIndex);
                    BindAttachment(dt);
                }
            }
        }
#endregion

private void AlertMessage(string strMsg, string strUrl)
        {
if (string.IsNullOrEmpty(strUrl))
this.Page.ClientScript.RegisterStartupScript(GetType(), "alert", "<script>alert('" + strMsg.Replace("\r\n", "<br />").Replace(" ", "&nbsp;") + "');</script>");
else
this.Page.ClientScript.RegisterStartupScript(GetType(), "alert", "<script>alert('" + strMsg.Replace("\r\n", "<br />").Replace(" ", "&nbsp;") + "');window.location.href='" + strUrl + "';</script>");
        }

    }
}