Filter data in crystal report using datetimepicker

问题:

I'm working on a report in Crystal Reports C# windows application.i fetch the data from localhost server to crystal report. I have 2 datetimepicker in my form.

datetimepicker1 = dtpfrom

datetimepicker2 - dtpto

Crystalreport

Now I want that, when selecting some date in from and the to datetimepicker the between data is show in the crystal report please help me to solve i don't know how to start. i'm searching through googling i didn't get any thing about between data in datetimepicker show in crystal report. Any ideas?

Here my try:

MySqlConnection conn = new MySqlConnection(MyCon);
            CrystalReport1 objcr = new CrystalReport1();
            MySqlDataAdapter da = new MySqlDataAdapter("select * from data where date>='" + DateTime.Parse(dtpfrom.Text) + "' and date<='" + DateTime.Parse(dtpto.Text) + "' ", conn);
            DataTable dt = new DataTable();
            da.Fill(dt);
            objcr.SetDataSource(dt);
            crystalReportViewer1.ReportSource = objcr;
            crystalReportViewer1.RefreshReport();

But i'm getting an error

An unhandled exception of type 'CrystalDecisions.CrystalReports.Engine.DataSourceException' occurred in CrystalDecisions.ReportAppServer.DataSetConversion.dll

Additional information: Failed to load database information.

On line:

objcr.SetDataSource(dt);

回答1:

@divi

filter data in report using datetimepicker is not done for your coding

Do the following:

create a new parameter fromdate, todate in Field Explorer -> Parameter Field(Right Click)-> New

like this make todate also

then right click the report.

Select Report -> Selection Formula -> Record...

Do following

then click save and close button in that form.

Know this:

Right Click the report -> Database -> Set Datasource Location...

Now Code

 ReportDocument report = new ReportDocument();
            report.Load("C:\\Users\\Desktop\\CrystalReport1.rpt");

            TableLogOnInfo Table = new TableLogOnInfo();
            ConnectionInfo Connection = new ConnectionInfo();
            Tables Tables;

            ParameterFieldDefinitions Parameters;
            ParameterFieldDefinition Parameter;
            ParameterValues Values = new ParameterValues();
            ParameterDiscreteValue DiscreteValue = new ParameterDiscreteValue();

            DiscreteValue.Value = dateTimePicker1.Text;
            Parameters = report.DataDefinition.ParameterFields;
            Parameter = Parameters["fromdate"];
            Values = Parameter.CurrentValues;

            Values.Clear();
            Values.Add(DiscreteValue);
            Parameter.ApplyCurrentValues(Values);

            DiscreteValue.Value = dateTimePicker2.Text;
            Parameters = report.DataDefinition.ParameterFields;
            Parameter = Parameters["todate"];
            Values = Parameter.CurrentValues;

            Values.Add(DiscreteValue);
            Parameter.ApplyCurrentValues(Values);

            Connection.ServerName = "Your servername in Set Datasource Location";
            Connection.DatabaseName = "Your databasename in Set Datasource Location";
            Connection.UserID = "your username";
            Connection.Password = "your password";

            Tables = report.Database.Tables;
            foreach (CrystalDecisions.CrystalReports.Engine.Table table in Tables)
            {
                Table = table.LogOnInfo;
                Table.ConnectionInfo = Connection;
                table.ApplyLogOnInfo(Table);
            }

            crystalReportViewer1.ReportSource = report;
            crystalReportViewer1.Refresh();

Hope This helps to solve your problem.