我所做的只是在表单中创建一个reportViewer,然后我有这个代码:
SqlConnection cn = new SqlConnection(@"Data Source=.\SQLEXPRESS;AttachDbFilename=G:\I.S\C#\billingSystem\Store.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True");
private void Form1_Load()
{
runRptViewer();
cn.Open();
}
private void rptGetDataset()
{
DataSet ds = new DataSet();
ds.DataSetName = "dsNewDataSet";
SqlDataAdapter da = new SqlDataAdapter("SELECT * FROM NewBill", cn);
ds.GetXmlSchema();
da.Fill(ds);
ds.WriteXmlSchema(@"G:\I.S\Testoooooooo\Testoooooooo\Dataset1.xsd");
ds.WriteXml(@"G:\I.S\Testoooooooo\Testoooooooo\Dataset1.xml");
}
private DataTable getData()
{
DataSet dss = new DataSet();
SqlDataAdapter da = new SqlDataAdapter("SELECT * FROM NewBill", cn);
da.Fill(dss);
DataTable dt = dss.Tables["NewBill"];
return dt;
}
private void runRptViewer()
{
this.reportViewer2.Reset();
//this.ReportViewer1.LocalReport.ReportPath = Server.MapPath("Report.rdlc");
this.reportViewer2.LocalReport.ReportPath =(@"G:\I.S\Testoooooooo\Testoooooooo\Report1.rdlc");
ReportDataSource rds = new ReportDataSource("dsNewDataSet_NewBill", getData());
this.reportViewer2.LocalReport.DataSources.Clear();
this.reportViewer2.LocalReport.DataSources.Add(rds);
//this.reportViewer2.DataBind();
this.reportViewer2.LocalReport.Refresh();
}
}
我有两个reportViewer reportViewer1工作,但万一db的目录已经改变它将无法正常工作,所以这就是为什么我尝试在另一个reportViewer,使其工作,即使数据库的目录更改,我可以只更改连接字符串。
问题是报告没有显示任何内容,我认为代码中存在问题:
//this.ReportViewer1.LocalReport.ReportPath = Server.MapPath("Report.rdlc");
这是一个Windows窗体,所以没有服务器,我把它改为:
this.reportViewer2.LocalReport.ReportPath =(@"G:\I.S\Testoooooooo\Testoooooooo\Report1.rdlc");
而且这个不起作用:
//this.reportViewer2.DataBind();
我无法理解这两行,是否意味着创建一个Dataset1.xsd和Dataset1.xml,或者只是编辑它们。 ds.WriteXmlSchema(@ “G:\ I.S \ Testoooooooo \ Testoooooooo \ Dataset1.xsd”); ds.WriteXml(@ “G:\ I.S \ Testoooooooo \ Testoooooooo \ Dataset1.xml”); 如果可能的话,我需要从创造所有东西到编码的步骤,这将是伟大的。
答案 0 :(得分:1)
您是如何创建数据集的?是SQL还是来自内存中的对象? 如果您尚未创建数据集,则需要在报表正常工作之前创建一个数据集。这可能会有所帮助:http://shrutikapoor-ubc.blogspot.com/2013/05/using-business-objects-in-report-viewer.html
答案 1 :(得分:1)
微软在这里有一个非常好的演练......
答案 2 :(得分:0)
要在C#WinForm项目中使用报表查看器,请将以下代码添加到按钮或form_load中:
string strConnectionString = "Data Source=(local);Initial Catalog=Projects_DB;Integrated Security=True";
DataSet ds = new DataSet();
SqlDataAdapter da = new SqlDataAdapter();
SqlCommand cmd = new SqlCommand("sp_GetProject " + "'0660CAD6-6F1A-4D19-A1FD-17BF3655AC98'");
cmd.CommandType = CommandType.Text;
cmd.Connection = new SqlConnection (strConnectionString);
da.SelectCommand = cmd;
da.Fill(ds,"DataSet1");
reportViewer1.ProcessingMode = ProcessingMode.Local;
reportViewer1.LocalReport.DataSources.Clear();
reportViewer1.LocalReport.DataSources.Add(new ReportDataSource("DataSet1", ds.Tables[0]));
reportViewer1.LocalReport.Refresh();
reportViewer1.RefreshReport();
假设您有一个接受@ProjectID参数的存储过程。如果将这些参数与sql命令一起传递,则必须设置 cmd.CommandType = CommandType.Text
。但是,如果您不想传递参数,只需将commandType更改为 cmd.CommandType = CommandType.StoredProcedure
。
以下是此示例中使用的存储过程:
CREATE PROC [dbo].[sp_GetProject]
@ProjectID nvarchar(50)=NULL
AS
BEGIN
SELECT ProjectID, ProjectName FROM Projects
WHERE
(@ProjectID IS NULL) OR (ProjectID = @ProjectID)
END