1

想法是输入新字段，然后在报告中显示它们 http://www.mediafire.com/view/6sla63hpecx2cc9/workflow.PNG mediafire.com/view/1juiekfr5gbk48d/theproplem.GIF

我在 DataSet 中过滤表格并假设显示数据，它与 DataGridView 完美配合，现在我希望找到一种方法来用填充 datagrid 的相同数据集填充报表

public partial class bill : Form
{
    SqlConnection cn = new SqlConnection(@"Data Source=.\SQLEXPRESS;AttachDbFilename=G:\I.S\C#\C#(Projects)\Nothin\billingSystem\billingSystem\Store.mdf;Integrated Security=True;User Instance=True");

    public bill(string Cusn,string su,string am,string to,string Di, string Cnum)
    {
        InitializeComponent();
        label1.Text = Cusn;
        label2.Text = su;
        label3.Text = am;
        label4.Text = to;
        label5.Text = Di;
        label6.Text = DateTime.Now.ToString("d/M/yyyy");
        label7.Text = Cnum;
    }

    private void bill_Load(object sender, EventArgs e)
    {
        LoadReport();
    }

    private void LoadReport()
    {

        int R = Convert.ToInt32(label7.Text);

        SqlDataAdapter ADAP = new SqlDataAdapter("Select * from Newbill where Con = '" + R + "'", cn);
        DataSet DS = new DataSet();
        ADAP.Fill(DS, "Store");
        dataGridView1.DataSource = DS.Tables["Store"];



        // TODO: This line of code loads data into the 'DataSet10.NewBill' table. You can move, or remove it, as needed.
        this.NewBillTableAdapter.Fill(this.DataSet10.NewBill, R);
        this.reportViewer1.RefreshReport();

        ReportParameter[] allPar = new ReportParameter[5]; // create parameters array
        ReportParameter parSu = new ReportParameter("Summation", label2.Text);
        ReportParameter parDiscount = new ReportParameter("Discount", label5.Text);
        ReportParameter parDisA = new ReportParameter("DiscountAmount", label3.Text);
        ReportParameter parTotal = new ReportParameter("Total", label4.Text);
        ReportParameter parCus = new ReportParameter("CustomerName", label1.Text);

        allPar[0] = parSu; //assign parameters to parameter array
        allPar[1] = parDiscount;
        allPar[2] = parTotal;
        allPar[3] = parDisA;
        allPar[4] = parCus;

        this.reportViewer1.LocalReport.SetParameters(allPar);
        this.reportViewer1.RefreshReport();
        // TODO: This line of code loads data into the 'DataSet1.NewBill' table. You can move, or remove it, as needed.
        //this.NewBillTableAdapter.Fill(this.DataSet1.NewBill, R, O);
        //this.reportViewer1.RefreshReport();
    }
}

我看过这个：http ://www.verious.com/qa/how-can-i-load-datatable-as-report-data-source/

实际上我需要一些步骤来使用查询从数据库中查看数据以过滤报告中的数据，我在谷歌上找到的所有内容都是这样的：http: //www.codeproject.com/Articles/31862/Dynamic-Binding-Of- RDLC-To-ReportViewer但在插入新字段时它不起作用。

怎么样，我尝试刷新数据集以包含表中发生的更改（在我的情况下插入新行“新数据”）但它给了我：

A data source instance has not been supplied for the data source 'DataSet 10_NewBill'.


private void LoadReport()
        {
            int R = Convert.ToInt32(label7.Text);

            this.reportViewer1.LocalReport.DataSources.Clear();
            DataTable dt = new DataTable();
            dt = this.NewBillTableAdapter.GetData(R);

            ReportDataSource rprtDTSource = new ReportDataSource(dt.TableName, dt);

            this.reportViewer1.LocalReport.DataSources.Add(rprtDTSource);
            this.reportViewer1.RefreshReport(); 

            // TODO: This line of code loads data into the 'DataSet10.NewBill' table. You can move, or remove it, as needed.
            this.NewBillTableAdapter.Fill(this.DataSet10.NewBill,R );

            this.reportViewer1.RefreshReport();

            ReportParameter[] allPar = new ReportParameter[5]; // create parameters array
            ReportParameter parSu = new ReportParameter("Summation", label2.Text);
            ReportParameter parDiscount = new ReportParameter("Discount", label5.Text);
            ReportParameter parDisA = new ReportParameter("DiscountAmount", label3.Text);
            ReportParameter parTotal = new ReportParameter("Total", label4.Text);
            ReportParameter parCus = new ReportParameter("CustomerName", label1.Text);

            allPar[0] = parSu; //assign parameters to parameter array
            allPar[1] = parDiscount;
            allPar[2] = parTotal;
            allPar[3] = parDisA;
            allPar[4] = parCus;


            this.reportViewer1.LocalReport.SetParameters(allPar);
            this.reportViewer1.RefreshReport();
        }

和这个

    int R = Convert.ToInt32(label7.Text);
    SqlDataAdapter ADAP = new SqlDataAdapter("Select * from Newbill where Con = '" + R + "'", cn);
    DataSet DS = new DataSet();
    ADAP.Fill(DS, "Store");
    DataTable dt = new DataTable();
    dt.TableName = "Store";
    cn.Open();
    ADAP.Fill(dt);
    reportViewer1.ProcessingMode = ProcessingMode.Local;
    ReportDataSource source = new ReportDataSource("Store", dt);
    reportViewer1.LocalReport.DataSources.Clear();
    reportViewer1.LocalReport.DataSources.Add(source);
    reportViewer1.DataBind();
    reportViewer1.LocalReport.Refresh();
    cn.Close();

它给了我：错误'Microsoft.Reporting.WinForms.ReportViewer'不包含'DataBind'的定义并且没有扩展方法'DataBind'接受'Microsoft.Reporting.WinForms.ReportViewer'类型的第一个参数可以找到

那么我在使用时需要什么参考？

4

4 回答 4

1

首先创建您的 rpt 对象，然后设置数据源。
请按照以下步骤操作。

CrystalReport1 objRpt = new CrystalReport1();  //create your rpt object
objRpt.SetDataSource(Dataset.Tables["tablename"]);   //set datasource to your rpt.
cryRptViewer.ReportSource = objRpt;  //give rpt object to your crystal report viewer.
于 2013-06-21T16:22:14.033 回答
0

这是我在将本地 RDLC 绑定到报表查看器时使用的。

// 创建 SqlConnection
        SqlConnection myConnection = new SqlConnection(ConnectionString);
        myCommand.Connection = myConnection;
        SqlDataAdapter da = new SqlDataAdapter(myCommand);

        //获取数据
        数据集数据 = 新数据集（）；
        da.填充（数据）；

        if (data != null && data.Tables.Count > 0 && data.Tables[0].Rows.Count > 0)
        {
            ReportingServicesReportViewer.Visible = true;
            ltrStatus.Text = string.Empty;

            //向查看者提供本地报表信息
            ReportingServicesReportViewer.LocalReport.ReportPath = Server.MapPath(Report.RDLCPath);

            //将报表属性和数据绑定到reportviewer
            ReportDataSource rds = new ReportDataSource("DataSet1", data.Tables[0]);
            ReportingServicesReportViewer.LocalReport.DataSources.Clear();
            ReportingServicesReportViewer.LocalReport.DataSources.Add(rds);
            ReportingServicesReportViewer.LocalReport.Refresh();
        }
        别的
        {
            ReportingServicesReportViewer.Visible = false;
            ltrStatus.Text = "没有数据可显示。";
        }

没有给数据表命名时我遇到了问题。您可以检查的另一件事是事件查看器是否存在报表查看器可能存在但未显示的异常？

于 2013-06-20T22:44:08.867 回答
0

好吧，我会尝试回答你的问题WinForms，ASP.NET因为你没有指定你使用的是哪个。问题是您正在调用RefreshReport一个空报告……它返回的正是该报告；一份空的报告。

Win Forms 设置报表的数据源

//First Create a `DataSource` for your Report:

ReportDataSource reportDataSource = new ReportDataSource();
reportDataSource.Name = "ReportData"; 
reportDataSource.Value = DS.Tables["Store"];

//Then bind the ReportViewer to that DataSource
this.reportViewer1.LocalReport.SetParameters(allPar);
this.reportViewer1.LocalReport.DataSources.Add(reportDataSource);   //This is what you are missing
this.reportViewer1.RefreshReport();

ASP.Net 设置报表的数据源

//First Create a `DataSource` for your Report - Same as winforms

ReportDataSource reportDataSource = new ReportDataSource();
reportDataSource.Name = "ReportData"; 
reportDataSource.Value = DS.Tables["Store"];

//Then bind the ReportViewer to that DataSource
this.reportViewer1.LocalReport.SetParameters(allPar);
this.reportViewer1.LocalReport.DataSources.Add(reportDataSource);
this.reportViewer1.DataBind(); //This is the difference in ASP.Net   
this.reportViewer1.RefreshReport();

从您的示例中，您可以整天设置SqlConnections、ReportParameters 和s，但除非您将您的绑定到填充的，否则您将一无所获。 DataTableReportViewerDataSet

于 2013-06-20T21:42:29.790 回答
0

问题是您的 DataTable 的名称（在代码中）与您的数据集的名称（在报告中）不匹配。您的错误给出了您应该使用的名称。尝试这个：

private void LoadReport()
    {
        int R = Convert.ToInt32(label7.Text);

        this.reportViewer1.LocalReport.DataSources.Clear();
        DataTable dt = new DataTable();
        dt = this.NewBillTableAdapter.GetData(R);
        //the DataTable name MUST match the name of the corresponding dataset 
        //   (as it is named in the report)
        dt.TableName = "10_NewBill";

        ReportDataSource rprtDTSource = new ReportDataSource(dt.TableName, dt);

        this.reportViewer1.LocalReport.DataSources.Add(rprtDTSource);
        this.reportViewer1.RefreshReport(); 

        //etc.
于 2013-06-21T17:18:17.887 回答