我有一个名为“Graph”的存储过程，它应该获取参数@Material 的值，并且我在 ASP.NET 中创建了一个报告，该报告应该使用来自存储过程的数据显示一个图表。
但是，当我尝试加载报告时，我得到：
报告处理过程中发生错误。无法创建到数据源“PhilipsMaterialsDataSet”的连接。ObjectDataSource“ObjectDataSource1”找不到没有参数的非泛型方法“GetData”。
我尝试了不同的解决方案，但都没有奏效。另外，我不确定是否应该在 ASP 代码中声明参数。
（顺便说一句，GetData 在这里无法识别，因为它有一个参数（@Material-来自存储过程），并且由于某种原因，它在没有任何参数的情况下被调用）
后面的代码：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Configuration;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using Microsoft.Reporting.WebForms;
public partial class StatisticsPage : System.Web.UI.Page
{
string Connectionstring = "server=(local)\\SQLEXPRESS;database=PhilipsMaterials;Integrated Security=SSPI";
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
}
}
protected void btndisplay_Click(object sender, EventArgs e)
{
BindReport();
}
private void BindReport()
{
SSRSReport report = new SSRSReport();
SqlParameter[] sqlParams = new SqlParameter[] {
new SqlParameter("@Material","453567068441")
};
string ReportDataSource = "DataSet1";
bool bind = report.CreateReport(Connectionstring, "graph", sqlParams, ref ReportViewer1, ReportDataSource);
if (bind)
{
ReportViewer1.Visible = true;
}
}
}
public class SSRSReport
{
public SSRSReport()
{
//
// TODO: Add constructor logic here
//
}
public bool CreateReport(String Connectionstring,string StoreProcedureName ,SqlParameter[] Parameter,ref Microsoft.Reporting.WebForms.ReportViewer ReportViewer,string ReportDataSource)
{
bool reportbind = false;
using (SqlConnection con = new SqlConnection(Connectionstring))
{
SqlCommand com = new SqlCommand();
com.Connection = con;
com.CommandType = CommandType.StoredProcedure;
com.CommandText = StoreProcedureName;
com.Parameters.AddRange(Parameter);
DataSet ds = new DataSet();
SqlDataAdapter da = new SqlDataAdapter(com);
da.Fill(ds);
ReportDataSource datasource = new ReportDataSource(ReportDataSource, ds.Tables[0]);
if ( ds.Tables[0].Rows.Count > 0)
{
ReportViewer.LocalReport.DataSources.Clear();
ReportViewer.LocalReport.DataSources.Add(datasource);
//This is another solution I tried:
//List<ReportParameter> lstReportParameters = new List<ReportParameter>();
//ReportParameter objReportParameter = new ReportParameter("Material", "453567068441");
//lstReportParameters.Add(objReportParameter);
//ReportViewer.LocalReport.SetParameters(lstReportParameters);
// ReportViewer.ServerReport.Refresh();
reportbind = true;
}
}
return reportbind;
}
}
ASP 代码：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="StatisticsPage.aspx.cs" Inherits="StatisticsPage" %>
<%@ Register assembly="Microsoft.ReportViewer.WebForms, Version=11.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91" namespace="Microsoft.Reporting.WebForms" tagprefix="rsweb" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>Test SSRS</title>
</head>
<body>
<form id="form1" runat="server">
<div>
</div>
<rsweb:ReportViewer ID="ReportViewer1" runat="server" Font-Names="Verdana" Font-Size="8pt" WaitMessageFont-Names="Verdana" WaitMessageFont-Size="14pt" Height="610px" Width="1179px" ShowParameterPrompts="true">
<LocalReport ReportPath="Report.rdlc" >
<DataSources>
<rsweb:ReportDataSource DataSourceId="ObjectDataSource1" Name="DataSet1" />
</DataSources>
</LocalReport>
</rsweb:ReportViewer>
<asp:ObjectDataSource ID="ObjectDataSource1" runat="server" SelectMethod="GetData" TypeName="PhilipsMaterialsDataSetTableAdapters.GraphTableAdapter" >
</asp:ObjectDataSource>
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
</form>
</body>
</html>