Friday, December 19, 2014

Convert To PDF Using Pechkin in asp .net.

  1. Download and compile this branch of the Pechkin project: https://github.com/tuespetre/Pechkin (This will solve the DLL hanging problem :)). Or, if you’re lazy, you can download here the needed DLLs. Buid the updated pechkin library
  2. Inside your web application solution add a reference to: Common.Logging.dll and Pechkin.dll.
    Add references
  3. Add to the root of your solution the following DLLs and set from the properties window: Copy to output directory » Copy always.Copy always
  4. Now you can start generating PDF files from HTML strings. Below is a very simple example that does this: 
    protected void btnExportToPDF_Click(object sender, EventArgs e)
    {
        var pechkin = Factory.Create(new GlobalConfig());
        var pdf = pechkin.Convert(new ObjectConfig()
                                .SetLoadImages(true).SetZoomFactor(1.5)
                                .SetPrintBackground(true)
                                .SetScreenMediaType(true)
                                .SetCreateExternalLinks(true), ltrReport.Text);

        //Return the PDF file
        Response.Clear();

        Response.ClearContent();
        Response.ClearHeaders();

        Response.ContentType = "application/pdf";
        Response.AddHeader("Content-Disposition", string.Format("attachment;filename=test.pdf; size={0}", pdf.Length));
        Response.BinaryWrite(pdf);

        Response.Flush();
        Response.End();
    }

5. After publishing it to IIS, select the application pool for your web site, then right-click and select Advanced Settings... Here make sure to enable 32-bit applications otherwise you will get this error:
Could not load file or assembly ‘Pechkin’ or one of its dependencies. An attempt was made to load a program with an incorrect format.
  1. Application pool settings

Tuesday, December 16, 2014

Joins in SQL

Different Types of Joins in SQL with Syntax and their uses.
This Pictures Explains it all.