使用VS2010 Vb.net的動態水晶報表

Question

我正在嘗試使用 Crystal Studio 生成報告，該報告從 vb.net 應用程序中獲取公共變量。 我認為最好的方法是在運行時動態地將過濾器提供給報告，但我不知道如何設置它以在運行時獲取任何信息。 有什么建議嗎？

Answer 1

string query = "select * from TestReport";

sqlconn.Open();

da = new SqlDataAdapter(query, sqlconn);

SqlCommandBuilder scb = new SqlCommandBuilder(da);

da.Fill(DS.TestReport);//DS is a DataSet object .

myCrystalReport1.SetDataSource(DS);


//-----------------

ParameterField paramfield = new ParameterField();

ParameterFields paramfields = new ParameterFields();

ParameterDiscreteValue discreteval = new ParameterDiscreteValue();


paramfield.Name = "myfirstname";

discreteval.Value = "10"; 


paramfield.CurrentValues.Add(discreteval); 

paramfields.Add(paramfield);

crystalReportViewer1.ParameterFieldInfo = paramfields;

//-----------------

crystalReportViewer1.ReportSource = myCrystalReport1;


crystalReportViewer1.Refresh();

sqlconn.Close();

Answer 2

最好的方法是使用記錄選擇標准中使用的參數構建報告。 然后，您可以加載報告並填充參數，如：

Imports CrystalDecisions.CrystalReports.Engine
Imports CrystalDecisions.Shared
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles Button1.Click

    Dim cryRpt As New ReportDocument
    cryRpt.Load("PUT CRYSTAL REPORT PATH HERE\CrystalReport1.rpt")

    Dim crParameterFieldDefinitions As ParameterFieldDefinitions
    Dim crParameterFieldDefinition As ParameterFieldDefinition
    Dim crParameterValues As New ParameterValues
    Dim crParameterDiscreteValue As New ParameterDiscreteValue

    crParameterDiscreteValue.Value = TextBox1.Text
    crParameterFieldDefinitions =  -
        cryRpt.DataDefinition.ParameterFields
    crParameterFieldDefinition =  _
        crParameterFieldDefinitions.Item("Customername")
    crParameterValues = crParameterFieldDefinition.CurrentValues

    crParameterValues.Clear()
    crParameterValues.Add(crParameterDiscreteValue)
    crParameterFieldDefinition.ApplyCurrentValues(crParameterValues)

    CrystalReportViewer1.ReportSource = cryRpt
    CrystalReportViewer1.Refresh()
End Sub

代碼來自： http : //vb.net-informations.com/crystal-report/vb.net_crystal_report_parameter_string.htm結束類