示例#1
0
        /// <summary>
        /// Each BuilderItem contains a Function Raster Dataset which is used to create the thumbnail.
        /// The thumbnail is created by Nearest Neighbor resampling of the Function Raster Dataset.
        /// The resampled raster is exported as a byte array and saved Into the IMemoryBlobStreamVariant.
        /// The blob is then inserted into the Thumbnail field.
        /// </summary>
        /// <param name="mybuilderItem">Item containing the Function Dataset to be added to the Mosaic Dataset</param>
        private void Resampling(IBuilderItem mybuilderItem)
        {
            try
            {
                IFunctionRasterDataset pFuncRasterDataset = mybuilderItem.Dataset; // Get the FunctionRasterDataset from mybuilderItem
                IRasterDataset         pRasterDataset;
                pRasterDataset = (IRasterDataset)pFuncRasterDataset;               // Cast the FunctionRasterDataset to Raster Dataset
                IPropertySet thePropSet = pFuncRasterDataset.Properties;           // Get the properties of the raster Dataset
                IRaster      praster    = pRasterDataset.CreateDefaultRaster();    // Create default raster from the above raster dataset
                praster.ResampleMethod = rstResamplingTypes.RSP_NearestNeighbor;   // The raster is resampled by RSP_NearestNeighbor
                IRasterProps pRasterProps = (IRasterProps)praster;                 // Raster properties are used to update the height, width of the raster
                pRasterProps.Height = 256;
                pRasterProps.Width  = 256;

                IRasterExporter pConverter = new RasterExporterClass();                           // IRasterExporter object is used to convert the raster to byte array.
                byte[]          pBytesArr;
                pBytesArr = pConverter.ExportToBytes(praster, "TIFF");                            // Convert the resampled Raster to a Byte array
                IMemoryBlobStream        memBlobStream = new MemoryBlobStream();                  // Create new IMemoryBlobStream
                IMemoryBlobStreamVariant varBlobStream = (IMemoryBlobStreamVariant)memBlobStream; // Assign to IMemoryBlobStreamVariant
                object anObject = pBytesArr;
                varBlobStream.ImportFromVariant(anObject);                                        // IMemoryBlobStreamVariant object is assigned the byte array
                thePropSet.SetProperty("ThumbNail", memBlobStream);                               // and saved to the property "ThumbNail"
            }
            catch (Exception ex)
            {
                System.Exception myExc = new System.Exception(
                    "Error: Failed to Re-Sampled the raster.Thumbnails will not be created." + ex.Message, ex);
                throw myExc;
            }
            return;
        }
示例#2
0
        //从数据库向本地拷贝
        private void  CopyEagleEyeMap(IWorkspace pWorkspace, string strPath)
        {
            Exception eError = null;
            //读取数据库表内容
            object tempObj = GetFieldValue("SYSSETTING", "SETTINGVALUE2", "SETTINGNAME='鹰眼图'", pWorkspace, out eError);
            IMemoryBlobStreamVariant pMemoryBlobStreamVariant = tempObj as  IMemoryBlobStreamVariant;
            IMemoryBlobStream        pMemoryBlobStream        = pMemoryBlobStreamVariant as IMemoryBlobStream;

            if (pMemoryBlobStream != null)
            {
                pMemoryBlobStream.SaveToFile(strPath);
            }
        }
示例#3
0
        //当初当前系统参数的值,放在指定路径(限定该参数值是BLOB类型,并且存入时是选取文件存入的)
        private void buttonXExport_Click(object sender, EventArgs e)
        {
            if (!comboBoxDataType.Text.Contains("File"))
            {
                return;
            }
            SaveFileDialog pOpenFileDlg = new SaveFileDialog();

            pOpenFileDlg.Title = "选择文件";
            switch (comboBoxDataType.Text)
            {
            case "XmlFile":
                //弹出对话框供用户设置导出的xml文件

                pOpenFileDlg.Filter = "XML数据(*.xml)|*.xml";
                break;

            case "MxdFile":
                pOpenFileDlg.Filter = "mxd文件(*.mxd)|*.mxd";
                break;
            }
            if (pOpenFileDlg.ShowDialog() == DialogResult.OK)
            {   //获得系统参数表的BLOB字段值,并导出到指定文件中
                string      strPath              = pOpenFileDlg.FileName;
                SysGisTable mSystable            = new SysCommon.Gis.SysGisTable(_TmpWorkSpace);
                Exception   err                  = null;
                Dictionary <string, object> pDic = mSystable.GetRow("SYSSETTING", "SETTINGNAME='" + this.textBoxSettingName.Text + "'", out err);
                if (pDic != null)
                {
                    if (pDic.ContainsKey("SETTINGVALUE2"))
                    {
                        if (pDic["SETTINGVALUE2"] != null)  //这里仅能成功导出当初以文件类型导入的BLOB字段
                        {
                            object tempObj = pDic["SETTINGVALUE2"];
                            IMemoryBlobStreamVariant pMemoryBlobStreamVariant = tempObj as IMemoryBlobStreamVariant;
                            IMemoryBlobStream        pMemoryBlobStream        = pMemoryBlobStreamVariant as IMemoryBlobStream;
                            if (pMemoryBlobStream != null)
                            {
                                pMemoryBlobStream.SaveToFile(strPath);
                                MessageBox.Show("将文件" + strPath + "导出成功", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);//ygc 2012-12-17 新增提示信息
                            }
                        }
                    }
                }
                mSystable = null;
            }
        }
示例#4
0
        //从数据库中读取MXD文档
        private byte[] ReadByteFromBlob(string TableName, string QuerStr, string fieldName)
        {
            ICursor pCursor = null;

            byte[] newbyte = null;
            try
            {
                ITable       pTable       = (m_pWorkspace as IFeatureWorkspace).OpenTable(TableName);
                IQueryFilter pQueryFilter = new QueryFilterClass();
                pQueryFilter.WhereClause = QuerStr;
                pQueryFilter.SubFields   = fieldName;
                pCursor = pTable.Search(pQueryFilter, false);
                if (pCursor == null)
                {
                    return(null);
                }
                int FieldIndex = pCursor.Fields.FindField(fieldName);
                if (FieldIndex < 0)
                {
                    return(null);
                }
                IRow pRow = pCursor.NextRow();
                if (pRow == null)
                {
                    return(null);
                }
                object resultValue = pRow.get_Value(FieldIndex);
                if (resultValue == null)
                {
                    return(null);
                }
                if (resultValue is System.DBNull)
                {
                    return(null);
                }
                IMemoryBlobStreamVariant pMemoryBlob = resultValue as IMemoryBlobStreamVariant;
                object outValue;
                pMemoryBlob.ExportToVariant(out outValue);
                newbyte = (byte[])outValue;
            }
            catch
            {
                return(null);
            }
            return(newbyte);
        }
示例#5
0
        public static bool CopySysSettingtoFile(IWorkspace pWorkspace, string strSettingName, string strPath)
        {
            Exception eError = null;

            if (pWorkspace != null)
            {
                try
                {
                    //读取数据库表内容
                    Fan.Common.Gis.SysGisTable sysTable = new Fan.Common.Gis.SysGisTable(pWorkspace);
                    Exception err = null;
                    Dictionary <string, object> pDic = sysTable.GetRow("SYSSETTING", "SETTINGNAME='" + strSettingName + "'", out err);
                    if (pDic != null)
                    {
                        if (pDic.ContainsKey("SETTINGVALUE2"))
                        {
                            if (pDic["SETTINGVALUE2"] != null)  //这里仅能成功导出当初以文件类型导入的BLOB字段
                            {
                                object tempObj = pDic["SETTINGVALUE2"];
                                IMemoryBlobStreamVariant pMemoryBlobStreamVariant = tempObj as IMemoryBlobStreamVariant;
                                IMemoryBlobStream        pMemoryBlobStream        = pMemoryBlobStreamVariant as IMemoryBlobStream;
                                if (pMemoryBlobStream != null)
                                {
                                    pMemoryBlobStream.SaveToFile(strPath);
                                }
                                sysTable = null;
                                return(true);
                            }
                        }
                    }
                    sysTable = null;
                }
                catch (Exception err)
                {}
            }
            return(false);
        }
示例#6
0
        public void SymbolFeatrueLayer(IFeatureLayer pFealyr)
        {
            if (!(pFealyr is IGeoFeatureLayer))
            {
                return;
            }

            try
            {
                string strXMLpath = System.Windows.Forms.Application.StartupPath + "\\..\\Template\\SymbolInfo.xml";

                string strLyrName = pFealyr.Name;
                if (pFealyr.FeatureClass != null)
                {
                    IDataset pDataset = pFealyr.FeatureClass as IDataset;
                    strLyrName = pDataset.Name;
                }

                strLyrName = strLyrName.Substring(strLyrName.IndexOf('.') + 1);

                if (m_vDoc == null)
                {
                    IFeatureWorkspace pFeaWks      = ModFrameData.m_pFeatureWorkspace;
                    ITable            pTable       = pFeaWks.OpenTable("SYMBOLINFO");
                    IQueryFilter      pQueryFilter = new ESRI.ArcGIS.Geodatabase.QueryFilterClass();
                    pQueryFilter.WhereClause = "SYMBOLNAME='ALLSYMBOL'";

                    ICursor pCursor = pTable.Search(pQueryFilter, false);
                    IRow    pRow    = pCursor.NextRow();
                    if (pRow == null)
                    {
                        return;
                    }

                    IMemoryBlobStreamVariant var = pRow.get_Value(pRow.Fields.FindField("SYMBOL")) as IMemoryBlobStreamVariant;
                    object tempObj = null;
                    if (var == null)
                    {
                        return;
                    }

                    var.ExportToVariant(out tempObj);
                    XmlDocument doc   = new XmlDocument();
                    byte[]      btyes = (byte[])tempObj;
                    string      xml   = Encoding.Default.GetString(btyes);
                    doc.LoadXml(xml);

                    DateTime updateTime = (DateTime)pRow.get_Value(pRow.Fields.FindField("UPDATETIME"));
                    DateTime Nowtime;

                    bool blnUpdate = false;

                    //读一个日志算了
                    string strTimeLog = System.Windows.Forms.Application.StartupPath + "\\..\\Template\\UpdateTime.txt";
                    if (System.IO.File.Exists(strTimeLog))
                    {
                        StreamReader sr      = new StreamReader(strTimeLog);
                        string       strTime = sr.ReadLine();
                        sr.Close();
                        if (!DateTime.TryParse(strTime, out Nowtime))
                        {
                            blnUpdate = true;
                        }

                        if (updateTime > Nowtime)
                        {
                            if (SysCommon.Error.ErrorHandle.ShowFrmInformation("是", "否", "存在最新符号信息,是否需要下载?"))
                            {
                                blnUpdate = true;
                            }
                        }
                    }
                    else
                    {
                        blnUpdate = true;
                    }

                    System.Runtime.InteropServices.Marshal.ReleaseComObject(pCursor);
                    pCursor = null;

                    //首先判断是否需要下载符号信息
                    if (System.IO.File.Exists(strXMLpath))
                    {
                        if (blnUpdate)
                        {
                            doc.Save(strXMLpath);
                            StreamWriter sw1 = new StreamWriter(strTimeLog);
                            sw1.Write(updateTime.ToString());
                            sw1.Close();
                        }
                    }
                    else
                    {
                        doc.Save(strXMLpath);
                        StreamWriter sw = new StreamWriter(strTimeLog);
                        sw.Write(updateTime.ToString());
                        sw.Close();
                    }

                    m_vDoc = new XmlDocument();
                    m_vDoc.Load(strXMLpath);
                }
                else
                {
                }

                XmlElement pElement = m_vDoc.SelectSingleNode("//" + strLyrName) as XmlElement;
                if (pElement == null)
                {
                    return;
                }

                IFeatureRenderer pFeaRender = SysCommon.XML.XMLClass.XmlDeSerializer2(pElement.FirstChild.Value) as IFeatureRenderer;
                IGeoFeatureLayer pGeoLyr    = pFealyr as IGeoFeatureLayer;
                pGeoLyr.Renderer = pFeaRender;
            }
            catch
            {
            }
        }