不要在数据集的水晶报表中显示记录数据

Question

我使用数据集

创建一个包含水晶报表的报表

http://upload7.ir/images/59709775438148913038.jpg

我的加载报告代码：

Imports System.Data.SqlClient

Public Class varede_report

Private Sub CrystalReportViewer1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CrystalReportViewer1.Load
    Dim rpt As New CrystalReport1
    Dim myconnection As SqlConnection
    Dim mycommand As New SqlCommand
    Dim myda As New SqlDataAdapter
    Dim myds As New rt_DataSet
    Try
        myconnection = New SqlConnection("Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\khatam.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True")
        mycommand.Connection = myconnection
        mycommand.CommandText = "select * from letter1"
        mycommand.CommandType = CommandType.Text
        myda.SelectCommand = mycommand
        myda.Fill(myds, "letter1")
        rpt.SetDataSource(myds)
        CrystalReportViewer1.ReportSource = rpt
    Catch ex As Exception
        'MessageBox.Show(Excep.Message, "error", MessageBoxButtons.OK, MessageBoxIcon.Error)
    End Try

End Sub

Private Sub varede_report_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

End Sub

结束课程 的

但是当我运行此应用程序时，不显示报告中数据集的表记录 请帮帮我!!!

Answer 1

我不是百分之百地加速VB，但你的代码并没有显示实际加载报告的任何地方。在C＃中你会有像

这样的东西

protected void Page_Load(object sender, EventArgs e)
{
ReportDocument reportdocument = new ReportDocument();
reportdocument.Load(Server.MapPath("CrystalReport.rpt"));
reportdocument.SetDatabaseLogon("username","password","SureshDasari","MySampleDB");
CrystalReportViewer1.ReportSource = reportdocument;
} 

行reportdocument.Load(Server.MapPath("CrystalReport.rpt"));指定报告。我在你的代码中没有看到。所以在你的CrystalReportViewer1_Load中添加rpt.Load("PUT CRYSTAL REPORT PATH HERE\CrystalReport1.rpt")之类的内容，看看是否有效。