c# winform 水晶报表连接SQL数据的这段代码为什么有问题

jwy0126 2009-11-25 09:31:23

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using System.Data.SqlClient;

using System.IO;





namespace Report

{

  

    public partial class ReportForm : Form

    {

        string  conString = string.Empty;

        FileStream fs = new FileStream(@"C:\ConnectString.txt",FileMode.Open,FileAccess.Read,FileShare.None);

        StreamReader sr = new StreamReader(fs);

        conString = sr.ReadLine();

        SqlConnection conn = new SqlConnection(conString);

        

        DataSet1 myData = new DataSet1();

        SqlDataAdapter da;

        public ReportForm()

        {

            InitializeComponent();

        }





        private void showReport()

        {

            da = new SqlDataAdapter("SELECT * FROM ReportTab", conn);

            da.Fill(myData, "ReportTab");

            //创建报表

            CrystalReport1 cr = new CrystalReport1();

            //设置报表的数据源

            cr.SetDataSource(myData);

            //设置报表视图的报表源

            crystalReportViewer1.ReportSource = cr;

        }





        private void ReportForm_Load(object sender, EventArgs e)

        {

            //

            showReport();

        }

    }

}

代码中 string conString = string.Empty;
FileStream fs = new FileStream(@"C:\ConnectString.txt",FileMode.Open,FileAccess.Read,FileShare.None);
StreamReader sr = new StreamReader(fs);
conString = sr.ReadLine();
SqlConnection conn = new SqlConnection(conString);
老是抛出一下问题。
错误 1 类、结构或接口成员声明中的标记“=”无效
错误 2 类、结构或接口成员声明中的标记“(”无效
错误 3 字段初始值设定项无法引用非静态字段、方法或属性“Report.ReportForm.fs”
错误 4 字段初始值设定项无法引用非静态字段、方法或属性“Report.ReportForm.conString”

...全文

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zhaojunquan 2009-12-28

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不錯！！

阿泰 2009-11-25

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呵呵。

jwy0126 感谢jwy0126的总结

jwy0126 2009-11-25

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解决方法：
string conString = string.Empty;
FileStream fs = new FileStream(@"C:\ConnectString.txt",FileMode.Open,FileAccess.Read,FileShare.None);
StreamReader sr = new StreamReader(fs);
conString = sr.ReadLine();
SqlConnection conn = new SqlConnection(conString);

DataSet1 myData = new DataSet1();
SqlDataAdapter da;
应该放在函数体内。

jwy0126 2009-11-25