异步导入滚动条

using System;
using System.Collections;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Text;
using System.Text.RegularExpressions;
using System.Windows.Forms;
using DevExpress.XtraEditors;
using DAL;
using Model;
using System.Data.SqlClient;
using System.Threading;
using System.IO;
using System.Xml;

namespace CEDAS_AppDBManager.UserControl
{
    public partial class ucColor : DevExpress.XtraEditors.XtraUserControl
    {
        int dbID;
        private Thread exportThread;
        string sFileName;
        Guid importPK;
        private delegate void SetControlStatusDelegate();
        private delegate void RefreshGridViewDelegate();
        private delegate void InvokeProgressDelegate(int position,int count);
        private delegate void InvokeExportCompleteDelegate(bool success, Exception ex);
        public ucColor(int iDBID)
        {
            InitializeComponent();
            dbID = iDBID;
            InitDataSource();
        }

        private void InitDataSource()
        {
            DAL.ColorConfig color = new DAL.ColorConfig();
            DataTable dt = color.GetColorSchemeByState(dbID);
            gridScheme.DataSource = dt;
        }

        private void viewScheme_CustomDrawRowIndicator(object sender, DevExpress.XtraGrid.Views.Grid.RowIndicatorCustomDrawEventArgs e)
        {
            if (e.Info.IsRowIndicator && e.RowHandle >= 0) e.Info.DisplayText = (e.RowHandle + 1).ToString().Trim();
        }

        //新建
        private void btnNew_Click(object sender, EventArgs e)
        {
            ColourScheme c = new ColourScheme();
            c.fdDatabaseID = dbID;
            frmBlack fm = new frmBlack();
            fm.Show(this);
            frmColor frmColor = new frmColor(c);
            frmColor.ShowDialog(this);
            fm.Close();
            fm.Dispose();
            if (frmColor.DialogResult == DialogResult.OK)
            {
                frmColor.Close();
                frmColor.Dispose();
                InitDataSource();
                viewScheme.SelectRow(viewScheme.RowCount-1);
            }
        }

        private void ExportColorAsync()
        {
            bool success = false;
            Exception exportException = null; ;
            InvokeSetControlStatus();
            FileStream fs = null;
            StreamWriter sw = null;
            try
            {
                string jsonResult = "<?xml version='1.0' encoding='gb2312'?><Schemes>";
                string schemeFormat = "<Scheme><fdSchemeID value='{0}'></fdSchemeID>" +
                "<fdDatabaseID value='{1}'></fdDatabaseID>" +
                "<fdShowName value='{2}'></fdShowName>" +
                "<fdSchemeName value='{3}'></fdSchemeName>" +
                "<fdIsRegiste value='{4}'></fdIsRegiste>" +
                "<fdState value='{5}'></fdState>" +
                "<fdUpdateTime value='{6}'></fdUpdateTime>" + "{7}</Scheme>";
                DataTable dtScheme = (DataTable)gridScheme.DataSource;
                for (int i = 0; i < dtScheme.Rows.Count; i++)
                {
                    DataRow dr = dtScheme.Rows[i];
                    string schemeInfo = string.Format(schemeFormat, dr["fdSchemeID"].ToString(), dr["fdDatabaseID"].ToString(),
                        Convert.ToBase64String(Encoding.Unicode.GetBytes(dr["fdShowName"].ToString())), dr["fdSchemeName"].ToString(),
                        dr["fdIsRegiste"].ToString(), dr["fdState"].ToString(), dr["fdUpdateTime"].ToString(),
                        GetColorJsonBySchemeID(new Guid(dr["fdSchemeID"].ToString())));
                    jsonResult += schemeInfo;
                    this.Invoke(new InvokeProgressDelegate(UpdateProgress), new object[] { i, dtScheme.Rows.Count });
                }
                jsonResult += "</Schemes>";
                fs = new FileStream(sFileName, FileMode.OpenOrCreate);
                sw = new StreamWriter(fs);
                sw.Write(jsonResult);
                success = true;
            }
            catch (Exception ex)
            {
                exportException = ex;
            }
            finally
            {
                sw.Flush();
                sw.Close();
                fs.Close();
                this.Invoke(new InvokeExportCompleteDelegate(UpdateExportCompleted), new object[] { success, exportException });
            }
        }

        private string GetColorJsonBySchemeID(Guid schemeID)
        {
            DataTable dt = new ColorConfig().GetColorsByScheme(schemeID);
            string jsonResult = "<Colors>";
            string colorFormat = "<Color><fdSchemeID value='{0}'></fdSchemeID><fdRGB value='{1}'></fdRGB><fdXIndex value='{2}'></fdXIndex></Color>";
            for (int i = 0; i < dt.Rows.Count; i++)
            {
                DataRow dr = dt.Rows[i];
                string colorInfo = string.Format(colorFormat, dr["fdSchemeID"].ToString(), dr["fdRGB"].ToString(), dr["fdXIndex"].ToString());
                jsonResult += colorInfo;
            }
            jsonResult += "</Colors>";
            return jsonResult;
        }

        private void InvokeSetControlStatus()
        {
            if (this.InvokeRequired)
            {
                this.Invoke(new SetControlStatusDelegate(SetControlStatus), null);
            }
            else
            {
                SetControlStatus();
            }
        }

        private void SetControlStatus()
        {
            panelExport.Visible = !panelExport.Visible;
            labelExport.Text = "正在导出" + "......";
            int iX = (Screen.PrimaryScreen.Bounds.Width - panelExport.Width) / 2;
            if (iX < 0) iX = 0;
            panelExport.Location = new Point(iX, (Screen.PrimaryScreen.Bounds.Height - panelExport.Height) / 2 - 160);
        }

        private void InvokeSetControlStatusImport()
        {
            if (this.InvokeRequired)
            {
                this.Invoke(new SetControlStatusDelegate(SetControlStatusImport), null);
            }
            else
            {
                SetControlStatus();
            }
        }

        private void SetControlStatusImport()
        {
            panelExport.Visible = !panelExport.Visible;
            labelExport.Text = "正在导入" + "......";
            int iX = (Screen.PrimaryScreen.Bounds.Width - panelExport.Width) / 2;
            if (iX < 0) iX = 0;
            panelExport.Location = new Point(iX, (Screen.PrimaryScreen.Bounds.Height - panelExport.Height) / 2 - 160);
        }

        private void UpdateProgress(int position,int count)
        {
            this.pBarExport.Position = (100 / count) * position;
            this.pBarExport.Invalidate();
        }

        private void UpdateExportCompleted(bool success,  Exception ex)
        {
            InvokeSetControlStatus();
            string msg = (success) ? "成功地导出！"
                : (ex != null) ? "错误原因：" + ex.Message
                : "由于出现未知情况发生导致导出结束！";

            if (!success) XtraMessageBox.Show(this, msg, "导出情况", MessageBoxButtons.OK, MessageBoxIcon.Information);
            else XtraMessageBox.Show(this, "导出成功！", "导出", MessageBoxButtons.OK, MessageBoxIcon.Information);
        }

        private void UpdateImportCompleted(bool success, Exception ex)
        {
            InvokeSetControlStatus();
            string msg = (success) ? "成功地导入！"
                : (ex != null) ? "错误原因：" + ex.Message
                : "由于出现未知情况发生导致导出结束！";

            if (!success) XtraMessageBox.Show(this, msg, "导入情况", MessageBoxButtons.OK, MessageBoxIcon.Information);
            else XtraMessageBox.Show(this, "导入成功！", "导入", MessageBoxButtons.OK, MessageBoxIcon.Information);
        }

        private void btnImport_Click(object sender, EventArgs e)
        {
        }

        private void ImportColorAsync()
        {
            bool success = false;
            Exception exportException = null; ;
            InvokeSetControlStatusImport();
            try
            {
                string jsonResult = "";
                XmlDocument dom = new XmlDocument();
                dom.Load(sFileName);
                Hashtable ht = new Hashtable();
                string sql;
                Guid fdSchemeID = Guid.Empty;
                int j = 0;
                int m = 0;
                foreach(XmlElement schemes in dom.DocumentElement.ChildNodes) {
                    j++;
                    SqlParameter[] parametersScheme = {
             new SqlParameter("@fdSchemeID", SqlDbType.UniqueIdentifier),
                      new SqlParameter("@fdDatabaseID", SqlDbType.Int),
                            new SqlParameter("@fdShowName", SqlDbType.VarChar,256),
                            new SqlParameter("@fdSchemeName", SqlDbType.VarChar,256),
                      new SqlParameter("@fdThumbnail", SqlDbType.Image),
                            new SqlParameter("@fdIsRegiste", SqlDbType.Bit),
                            new SqlParameter("@fdState", SqlDbType.Int),
                            new SqlParameter("@fdXIndex"+m, SqlDbType.Int),
                            new SqlParameter("@fdUpdateID", SqlDbType.Char,32),
                            new SqlParameter("@fdUpdateName", SqlDbType.NVarChar,32),
                      new SqlParameter("@fdUpdateTime", SqlDbType.DateTime)
                                        };
                    List<int> intRGB = new List<int>();
                    importPK = Guid.NewGuid();
                    //新增色系
                    fdSchemeID = importPK;// new Guid(schemes.ChildNodes[0].Attributes["value"].Value.ToString());
                    parametersScheme[0].Value = fdSchemeID;
                    parametersScheme[1].Value = dbID;// int.Parse(schemes.ChildNodes[1].Attributes["value"].Value.ToString());
                    parametersScheme[2].Value = new ColorConfig().GetShowNameByImport(Encoding.Unicode.GetString(Convert.FromBase64String(schemes.ChildNodes[2].Attributes["value"].Value.ToString())), dbID);// "复件" + Encoding.Unicode.GetString(Convert.FromBase64String(schemes.ChildNodes[2].Attributes["value"].Value.ToString())); ;
                    parametersScheme[3].Value = schemes.ChildNodes[3].Attributes["value"].Value.ToString();
                    //parametersScheme[4].Value = ConvertToIcon();
                    parametersScheme[5].Value = schemes.ChildNodes[4].Attributes["value"].Value.ToString();
                    parametersScheme[6].Value = schemes.ChildNodes[5].Attributes["value"].Value.ToString();
                    parametersScheme[7].Value = DbHelperSQL.GetMaxID("fdXIndex", "tbColourScheme")+m;
                    parametersScheme[8].Value = AppCommonValue.AdminID;
                    parametersScheme[9].Value = AppCommonValue.AdminName;
                    parametersScheme[10].Value = DateTime.Now;

                    //新增颜色
                    foreach (XmlElement colors in schemes.ChildNodes[7].ChildNodes)
                    {
                        int i = 0;
                        SqlParameter[] parametersColor = {
             new SqlParameter("@fdSchemeID", SqlDbType.UniqueIdentifier),
                      new SqlParameter("@fdRGB", SqlDbType.Int),
                            new SqlParameter("@fdXIndex"+j, SqlDbType.Int)
                                        };
                        parametersColor[0].Value = importPK;// new Guid(colors.ChildNodes[0].Attributes["value"].Value.ToString());
                        parametersColor[1].Value = int.Parse(colors.ChildNodes[1].Attributes["value"].Value.ToString());
                        parametersColor[2].Value = int.Parse(colors.ChildNodes[2].Attributes["value"].Value.ToString());
                        sql = "insert into tbColourConfig(fdSchemeID,fdRGB,fdXIndex) values (@fdSchemeID,@fdRGB,@fdXIndex" + j + ")";
                        ht.Add(sql, parametersColor);
                        intRGB.Add(int.Parse(colors.ChildNodes[1].Attributes["value"].Value.ToString()));
                        i++;
                        j++;
                    }
                    if (intRGB.Count != 0)
                    {
                        parametersScheme[4].Value = ConvertToIcon(intRGB);
                    }
                    sql = "insert into tbColourScheme(fdSchemeID,fdDatabaseID,fdShowName,fdSchemeName,fdThumbnail,fdIsRegiste,fdState,fdXIndex,fdUpdateID,fdUpdateName,fdUpdateTime) values(@fdSchemeID,@fdDatabaseID,@fdShowName,@fdSchemeName,@fdThumbnail,@fdIsRegiste,@fdState,@fdXIndex"+m+",@fdUpdateID,@fdUpdateName,@fdUpdateTime)";
                    ht.Add(sql, parametersScheme);
                    m++;
                }
                DbHelperSQL.ExecuteSqlTran(ht);
                success = true;
            }
            catch (Exception ex)
            {
                exportException = ex;
            }
            finally
            {
                this.Invoke(new InvokeExportCompleteDelegate(UpdateImportCompleted), new object[] { success, exportException });
                InvokeRefreshGridView();
            }
        }

        private void InvokeRefreshGridView()
        {
            if (this.InvokeRequired)
            {
                this.Invoke(new RefreshGridViewDelegate(InitDataSource), null);
            }
            else
            {
                InitDataSource();
            }
        }

        private byte[] ConvertToIcon(List<int> intRGB)
        {
            int imageWidth = intRGB.Count > 10 ? 250 : intRGB.Count * 25;
            Bitmap bt = new Bitmap(imageWidth, 25,System.Drawing.Imaging.PixelFormat.Format24bppRgb);
            Stream imageStream = new MemoryStream();
            Graphics g = Graphics.FromImage(bt);
            g.Clear(Color.White);
            int positionTemp = 0;
            foreach (int c in intRGB)
            {
                g.DrawRectangle(new Pen(Color.FromArgb(c)), positionTemp * 25, 0, 25, 25);
                g.FillRectangle(new SolidBrush(Color.FromArgb(c)), positionTemp * 25, 0, 25, 25);
                positionTemp++;
            }
            bt.Save(imageStream, System.Drawing.Imaging.ImageFormat.Jpeg);
            byte[] photo = new byte[(int)imageStream.Length];
            imageStream.Position = 0;
            imageStream.Read(photo, 0, (int)imageStream.Length);
            //byte[] photo = br.ReadBytes((int)imageStream.Length);           
            g.Dispose();
            //释放位图缓存
            bt.Dispose();
            imageStream.Close();
            return photo;
        }

        private void repositoryItemButtonEdit1_ButtonClick(object sender, DevExpress.XtraEditors.Controls.ButtonPressedEventArgs e)
        {
            int row = viewScheme.FocusedRowHandle ;
            ColourScheme c = new ColourScheme();
            c.fdSchemeID = new Guid(viewScheme.GetRowCellValue(row,"fdSchemeID").ToString());
            c.fdShowName =viewScheme.GetRowCellValue(row,"fdShowName").ToString();
            c.fdDatabaseID = dbID;

            if (e.Button.Caption == "编辑")
            {
                frmBlack fm = new frmBlack();
                fm.Show(this);
                frmColor frmColor = new frmColor(c);
                frmColor.ShowDialog(this);
                fm.Close();
                fm.Dispose();
                if (frmColor.DialogResult == DialogResult.OK)
                {
                    frmColor.Close();
                    frmColor.Dispose();
                    InitDataSource();
                    viewScheme.SelectRow(row);
                }
            }
            else
            {
                DialogResult dr = XtraMessageBox.Show("您确认删除色系【" + c.fdShowName + "】？ 引用该色系的监测报表将使用默认色系！", "提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Question);
                if (dr == DialogResult.OK)
                {
                    try
                    {
                        new ColorConfig().DeleteSchemeAndColor(c.fdSchemeID);
                        InitDataSource();
                    }
                    catch (Exception ex)
                    {
                        XtraMessageBox.Show("删除失败！原因是：" + ex.Message, "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    }
                }
            }
        }

        private void btnUp_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
        {
            int temp = viewScheme.FocusedRowHandle - 1;
            DataRow curRow = viewScheme.GetDataRow(viewScheme.FocusedRowHandle);
            DataRow upRow = viewScheme.GetDataRow(viewScheme.FocusedRowHandle - 1);
            if (curRow == null)
            {
                XtraMessageBox.Show(this, "选中要上移的色系！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
            }
            if (upRow == null) return;
            new ColorConfig().UpdateColorFdXIndex(new Guid(curRow["fdSchemeID"].ToString()), int.Parse(curRow["fdXIndex"].ToString()),
                new Guid(upRow["fdSchemeID"].ToString()), int.Parse(upRow["fdXIndex"].ToString()));
            InitDataSource();
            viewScheme.FocusedRowHandle = temp;
            viewScheme.SelectRow(temp);
        }

        private void btnDown_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
        {
            int temp = viewScheme.FocusedRowHandle + 1;
            DataRow curRow = viewScheme.GetDataRow(viewScheme.FocusedRowHandle);
            DataRow downRow = viewScheme.GetDataRow(viewScheme.FocusedRowHandle + 1);
            if (curRow == null)
            {
                XtraMessageBox.Show(this, "选中要下移的色系！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
            }
            if (downRow == null) return;
            new ColorConfig().UpdateColorFdXIndex(new Guid(curRow["fdSchemeID"].ToString()), int.Parse(curRow["fdXIndex"].ToString()),
                new Guid(downRow["fdSchemeID"].ToString()), int.Parse(downRow["fdXIndex"].ToString()));
            InitDataSource();
            viewScheme.FocusedRowHandle = temp;
            viewScheme.SelectRow(temp);
        }

        private void barButtonItem3_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
        {
            OpenFileDialog openFileDialog = new OpenFileDialog();
            openFileDialog.Title = "导入色系";
            openFileDialog.Filter = "色系文件(*.color)|*.color";
            if (openFileDialog.ShowDialog() == DialogResult.OK)
            {
                sFileName = openFileDialog.FileName;
                pBarExport.Position = 0;
                this.exportThread = new Thread(new ThreadStart(ImportColorAsync));
                this.exportThread.Start();
            }
        }

        private void barButtonItem4_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
        {
            if (((DataTable)gridScheme.DataSource).Rows.Count == 0)
            {
                XtraMessageBox.Show("当前列表中没有色系，无法导出!", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
                return;
            }
            SaveFileDialog saveFileDialog = new SaveFileDialog();
            saveFileDialog.Title = "导出色系";
            saveFileDialog.Filter = "色系文件(*.color)|*.color";
            if (saveFileDialog.ShowDialog() == DialogResult.OK)
            {
                sFileName = saveFileDialog.FileName;
                pBarExport.Position = 0;
                this.exportThread = new Thread(new ThreadStart(ExportColorAsync));
                this.exportThread.Start();
            }
        }

        private void barButtonItem1_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
        {
            DialogResult dr = XtraMessageBox.Show("您确认删除清理色系？", "提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Question);
            if (dr == DialogResult.OK)
            {
                try
                {
                    new ColorConfig().ClearSchemeOverThreeMonths(dbID);
                    XtraMessageBox.Show("清理成功!", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
                }
                catch (Exception ex)
                {
                    XtraMessageBox.Show("清理失败！原因是：" + ex.Message, "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
            }
        }

    }
}