Reportviewer無法正常顯示報告

Question

編輯：我做到了，所以我正在執行一條sql語句而不是存儲過程，僅用於調試。我現在有一個錯誤：沒有爲數據源'DataSet2'提供數據源實例。我也擺脫了ReportViewer1.Reset（）;

我想弄清楚爲什麼我的reportviewer沒有顯示像它應該在用戶點擊Reports.aspx上的按鈕「RunReportButton」後的報告。我有一個sql語句有2個參數：@PersonID和@Category。這個sql語句搜索PersonExercise表中所有具有PersonID = @PersonID和@Category = Category的記錄。我執行一個基於這個sql語句的數據集，然後將其傳遞到我的reports.aspx後面的代碼中的reportDataSource。

然後我創建Report1.rdlc並將其鏈接到我的數據集dsCardio。我將ExerciseDate，Distance，Speed從我的數據集拖到Report1.rdlc上的矩陣中。當用戶單擊Reports.aspx上的RunReportButton時，出現以下錯誤：「數據源實例尚未提供給數據源'DataSet2'」。我調試了我的代碼，我看到了thisDataSet.Tables [0] .Rows.Count = 3，它應該。對於reportviewer，我也有processingmode = local。任何幫助？非常感謝！

這裏是我的Reports.aspx標記具有的ReportViewer：

<asp:Content ID="HeaderContent" runat="server" ContentPlaceHolderID="HeadContent"> 

<asp:Label ID="lblMessage" runat="server" Text="Label"></asp:Label> 
<br /> 
<br /> 
<asp:DropDownList ID="DropDownList1" runat="server"> 
    <asp:ListItem>Cardiovascular</asp:ListItem> 
    <asp:ListItem>Weight Lifting</asp:ListItem> 
</asp:DropDownList> 
<asp:ScriptManager ID="ScriptManager1" runat="server"> 
</asp:ScriptManager> 


<asp:Button ID="RunReportButton" runat="server" 
    onclick="RunReportButton_Click1" Text="Run Report" Height="27px" 
    Width="84px" /> 


<rsweb:ReportViewer ID="ReportViewer1" runat="server" Font-Names="Verdana" 
    Font-Size="8pt" InteractiveDeviceInfos="(Collection)" 
    WaitMessageFont-Names="Verdana" WaitMessageFont-Size="14pt" 
    Visible="False"> 
    <LocalReport ReportPath="Report1.rdlc"> 

    </LocalReport> 
</rsweb:ReportViewer> 




</asp:Content> 

這裏是Reports.aspx.cs：

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Web; 
using System.Web.UI; 
using System.Web.UI.WebControls; 
using Microsoft.ApplicationBlocks.Data; 
using Microsoft.Reporting.WebForms; 
using System.Data.SqlClient; 
using System.Data; 
using System.Data.Common; 
using System.Data.Sql; 
using System.Configuration; 

namespace ExerciseTracker2000 
{ 
public partial class Reports : System.Web.UI.Page 
{ 
    #region Properties 

    public static string ConnectionString { get; set; } 
    public static int personID { get; set; } 
    #endregion 

    #region Variables 

    public int personID = 0; 
    public SqlParameter[] SearchValue = new SqlParameter[2]; 

    #endregion 

    #region Page Events 

    protected void Page_Load(object sender, EventArgs e) 
    { 
     personID = CommonMethods.getLoggedInUser();   
    } 

    protected void RunReportButton_Click1(object sender, EventArgs e) 
    { 
     try 
     { 
      DataSet ds = new DataSet(); 
      string strCategory = ddlCategory.SelectedValue; 
      // strSQL select for orders with no invoices 
      strSQL = "SELECT PersonID, ExerciseDate, Category, Exercise, Duration, Distance, Speed"; 
      strSQL = strSQL + " from dbo.PersonExercise"; 
      strSQL = strSQL + " where PersonID = " + personID + " And Category = '" + strCategory + "'"; 

      using (var connection = new SqlConnection(ConnectionString)) 
      { 
       SqlDataAdapter ad = new SqlDataAdapter(strSQL, connection); 

       ad.Fill(ds, "Table0"); 

      } 


      //ReportViewer1.Visible is set to false in design mode 
      ReportViewer1.Visible = true; 
      SqlConnection thisConnection = new SqlConnection(ConnectionString); 


      /* Associate thisDataSet (now loaded with the stored 
       procedure result) with the ReportViewer datasource */ 
      Microsoft.Reporting.WebForms.ReportDataSource datasource = new 
      Microsoft.Reporting.WebForms.ReportDataSource("DataSetCategories_ShowExercisesByCategory", ds.Tables[0]); 


      ReportViewer1.LocalReport.DataSources.Clear(); 
      ReportViewer1.LocalReport.DataSources.Add(datasource); 

      if (thisDataSet.Tables[0].Rows.Count == 0) 
      { 
       lblMessage.Text = "Sorry, no products under this category!"; 
      } 

      ReportViewer1.LocalReport.Refresh(); 
     } 
     catch (Exception ex) 
     { 
      lblMessage.Text = "Error: " + ex.Message.ToString(); 
     } 
    } 

    #endregion 
} 

} 

Answer 1

在哪裏是你通往t的途徑他報告 ReportViewer1.LocalReport.Path =「Report1.rdlc」;

編輯：沒關係，我看到它在XAML

EDIT2：你叫ReportViewer1.Reset（）;這是清除LocalReport。您必須重新設置報告路徑。