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Load a picture in runtime

Posted on 2004-08-15
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Last Modified: 2008-02-01
Hello everybody!!
First, is it possible to load a picture on runtime using de RDC version from vb.net? what a have to do is to load diferent pictures from their paths information. I also have to change some labels' caption when the report is loading. Is it possible to do it using RDC or do I need to change to other different version of Crystal Repots?

Could anyone tell me how to develop this?
thanx.
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Question by:Robertonio
9 Comments
 
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Expert Comment

by:GJParker
ID: 11807884
Here is a sapmple from BO using the Section_Formoat Event on how to load pictures using the RDC at runtime

http://support.businessobjects.com/communityCS/FilesAndUpdates/cr9_vb_rdc_loadpic.exe.asp

This should help you with the text formattiing you require

http://support.businessobjects.com/communityCS/FilesAndUpdates/employeeprofiledemo.zip.asp

Gary
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Expert Comment

by:ebolek
ID: 11810295
This is how I do it. Hopefully it helps. If you need explanation, let me know
Regards
Emre

private void DynamicImages()
            {
                  DataSet MyDataSet = new DataSet();
                  DataTable MyDataTable;
                  DataRow MyDataRow;
                  MyDataTable = new DataTable();
                  DataColumn MyDataColumn = new DataColumn();
                  //Create the first column
                  MyDataColumn = new DataColumn("PicNumber", Type.GetType("System.Int32"));
                  MyDataTable.Columns.Add(MyDataColumn);  
                  //Field that points to the image file
                  MyDataColumn = new DataColumn("ImagePath", Type.GetType("System.String"));
                  MyDataTable.Columns.Add(MyDataColumn);
                  //populate the table with dummy data
                  MyDataRow = MyDataTable.NewRow();
                  MyDataRow["PicNumber"] = 1;
                  MyDataRow["ImagePath"] = "C:\\Image1.jpg";
                  MyDataTable.Rows.Add(MyDataRow);
                  MyDataSet.Tables.Add(MyDataTable);
                  //Add the image column to the table
                  AddImageColumn(MyDataTable, "Image");
                  //only do this when you first design the report
                  MyDataSet.WriteXmlSchema(@"c:\ImageTable.xsd");
                  //Load the images into the dataset
                  LoadAllImages(MyDataTable, "ImagePath", "Image");
                  

            }
            public void AddImageColumn(DataTable MyDataTable, string FieldName)
            {
                  //create the column to hold the binary image
                  DataColumn MyDataColumn = new DataColumn(FieldName,Type.GetType("System.Byte[]"));
                  MyDataTable.Columns.Add(MyDataColumn);
            }
            public void LoadAllImages(DataTable MyDataTable,string FilePathField, string ImageField)
            {
                  foreach(DataRow MyDataRow in MyDataTable.Rows )
                  {
                        LoadImage(MyDataRow, ImageField, MyDataRow[FilePathField].ToString());
                  }
            }
            public void LoadImage(DataRow MyDataRow, string ImageField, string FilePath)
            {
                  FilePath = "c:\\Image1.jpg";
                  System.IO.FileStream fs = new System.IO.FileStream(FilePath, System.IO.FileMode.Open,System.IO.FileAccess.Read);
                  Byte[] Image = new Byte[fs.Length];
                  fs.Read(Image, 0, (int)fs.Length);
                  fs.Close();
                  MyDataRow[ImageField] = Image;  
            }            
            public void CreateXMLSchemaFile(string XMLFileName, DataSet XMLDataSet)
            {
                  XMLDataSet.WriteXmlSchema("ImageDataSchema") ;
            }
            public DataSet FillDataSet(DataSet MyDataSet)
            {
                  SqlConnection MyConnectionString = new SqlConnection("server=OMEGA_DEV;database=omega_test;UID=OmegaWeb;PWD=JascPSP6;");
                  string SQL;
                  SQL = "uspReportData";            
                 
                  //Create a DataAdapter, and then provide the name of the stored procedure.
                  SqlDataAdapter MyDataAdapter = new SqlDataAdapter(SQL, MyConnectionString);

                  //Set the command type as StoredProcedure.
                  MyDataAdapter.SelectCommand.CommandType = CommandType.StoredProcedure;

                  //Create and add a parameter to Parameters collection for the stored procedure.
                  MyDataAdapter.SelectCommand.Parameters.Add(new SqlParameter("@CaseID", SqlDbType.VarChar, 25));
                  MyDataAdapter.SelectCommand.Parameters.Add(new SqlParameter("@line_number", SqlDbType.Int));
                  MyDataAdapter.SelectCommand.Parameters.Add(new SqlParameter("@company_id", SqlDbType.VarChar, 4));
                  //Assign the search value to the parameter.
                  MyDataAdapter.SelectCommand.Parameters["@CaseID"].Value = _parametervalues[0];
                  MyDataAdapter.SelectCommand.Parameters["@line_number"].Value = _parametervalues[1];
                  MyDataAdapter.SelectCommand.Parameters["@company_id"].Value = _parametervalues[2];
                  MyDataAdapter.Fill(MyDataSet.Tables["uspReportData"]);
                  return MyDataSet;
            }
            private bool HasParameter(CrystalDecisions.CrystalReports.Engine.ReportDocument MyReport)
            {
                  if (MyReport.DataDefinition.ParameterFields.Count == 0)  
                  {
                        _HasParameters = false;
                        return _HasParameters;
                  }
                  else
                  {
                        _HasParameters = true;
                        return _HasParameters;
                  }
            }
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Author Comment

by:Robertonio
ID: 11823017
It seems to be useful, but, every crystal reports have objects witch I cannot access (with VB.net) in order to modify them and insert the text and pictures I need. Do you know how to do it using VB.NET, there are a loads of examples with VB6.
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Accepted Solution

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ebolek earned 250 total points
ID: 11823060
My code that I posted here allows you to change the pictures runtime. i dont understand what are you asking. can you explain better
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Author Comment

by:Robertonio
ID: 11824714
ok. thanx  I was making a mistake when passing this code to .net, thanx ebolex
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Author Comment

by:Robertonio
ID: 11894602

Ebolek the code you sent me works correctly
but? how can I insert a column (wich contains the path information) that i have already loaded into my data set instead using those rows and columns that you use in your example
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Expert Comment

by:ebolek
ID: 11894896
when you create your dataset, you add extra columns like report path and file name etc. Then you ssave your report with that dataset as dtaasource. Then you use my code to set the values of thiose cloumns and populate the images
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Expert Comment

by:BuuTran159
ID: 12042373
Hi,
Cool thread, another thing that it is great if you can help...

Can we resize of change some properties to make make image is the same aspect with it origin size. ie. currently the image is strected full control size. I can do it in VB6& CR by resize the controls in run-time, but for ASP.NET I don't know how to do now.

Thanks in advanced.

Buu.
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Expert Comment

by:ebolek
ID: 12043825
i think you can there is image to respect ratio and that should solve your problem. I dont know exactly the code to write because i never tries it but if you can it should be under

reportdefinitions.pictureobjects properties

Regards
Emre
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