C crystal report printing

turn ：https://www.cnblogs.com/aitong/p/10717786.html

Introduction to crystal report
Crystal report yes vs A report control comes with earlier versions .vs2017 Do not bring your own crystal report , Self installation required . Although the crystal report is a charging control , But Microsoft has already paid , therefore vs The self-contained crystal report can be used directly .

If the project is .net 4.0 Above version , Need modification App.config file . Because of crystal report .net The version may be lower than .net 4.0
When the software is released, the corresponding config Documents released together , Otherwise, crystal report cannot be used

<startup useLegacyV2RuntimeActivationPolicy="true"> // Add  useLegacyV2RuntimeActivationPolicy="true"
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" /> 
</startup>

Add datasets in Solution Explorer DataSet1.xsd, Add DataTable.

newly build Crystal Reports file
Create a new... In solution explorer Crystal Reports file ： CrystalReport1.rpt . After adding, the left side will appear “ Field Explorer ” . If you accidentally close the field Explorer , Can be in “ View ” “ Other windows ” “ document outline ” Call it out .

vs Corresponding controls will also appear in the toolbox of . You can add text objects to the report . Common attributes of text objects ：CanGrow ( Can wrap lines automatically ) HorAlignment ( In the middle , Keep to the left , Keep right ).

Right click the database field and select database expert . Add DataTable1

stay “ Group name field ” Right click to insert Group . choice DataTable1 In the field , The sorting method is selected in the original order （ The sorting method of crystal report is not practical , It's usually set DataTable When sorting ）.

In the database field Name Sex You can drag it to the details of the report . The header of the report will automatically add a text box . The content of the text box can be modified to name , Gender .

Add display controls in the interface ：CrystalReportViewer Rename it to crv

Create a report object in the window and add data , According to the CrystalReportViewer above . Can print directly , You can also print through the print button on the control .

using CrystalDecisions.CrystalReports.Engine;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace CrTest
{
    
    public partial class Form1 : Form
    {
    
        public Form1(bool directPrint = false)
        {
    
            InitializeComponent();
            DataSet1 ds = new DataSet1();
            ds.DataTable1.Rows.Add(" Group 1", " Zhang 1", " male ");
            ds.DataTable1.Rows.Add(" Group 3", " king 1", " male ");
            ds.DataTable1.Rows.Add(" Group 2", " Li 1", " male ");
            ds.DataTable1.Rows.Add(" Group 1", " Zhang 2", " male ");
            ds.DataTable1.Rows.Add(" Group 1", " Zhang 3", " Woman ");
            ds.DataTable1.Rows.Add(" Group 1", " Zhang 4", " male ");
            ds.DataTable1.Rows.Add(" Group 2", " Li 2", " male ");
            ds.DataTable1.Rows.Add(" Group 2", " Li 3", " Woman ");
            ds.DataTable1.Rows.Add(" Group 2", " Li 4", " male ");
            ds.DataTable1.Rows.Add(" Group 3", " king 2", " male ");

            ReportClass cr = new CrystalReport1();
            cr.SetDataSource(ds);
            TextObject title = (TextObject)cr.ReportDefinition.ReportObjects["Text1"];
            title.Text = " Personnel form ";
            if (directPrint)
            {
    
                PrintDialog print = new PrintDialog();
                if (print.ShowDialog() == DialogResult.OK)
                {
    
                    cr.PrintOptions.PrinterName = print.PrinterSettings.PrinterName;
                    cr.PrintToPrinter(1, false, 0, 0);
                }
            }
            this.crv.ReportSource = cr;
        }
    }
}