从数据集创建reportviewer

Question

我正在读取一个文件，我从中创建了一个数据集，我需要从该数据集创建一个报告，但这段代码不起作用。所以也许有人可以告诉我我做错了什么我真的会对此做出反应或建议另一种解决这个问题的方法。

BuildataSet功能正常工作，创建报告，它给我带来了什么问题。

public DataSet BuildDataSet(string file,string tableName,string delimeter)
{
  //create our DataSet
  DataSet domains = new DataSet();
   //add our table
   domains.Tables.Add(tableName);
    String c =    "VOYAGE|SAILDATE|DELIVERYDATE|AMENITY|QTY|COMPLIMENTS|MESSAGE|CABIN|1STPAXNAME|"
    +"1STPAXLAST|2NDPAXNAME|2NDPAXLAST|3RDPAXNAME|3RDPAXLAST|4THPAXNAME|4THPAXLAST|SHIP|TYPE|DELIVERYTYPE|DROOM|SEATING|TABLE|GHOSTCOLUMN";

try
{
    //first make sure the file exists
    if (File.Exists(file))
    {
        //create a StreamReader and open our text file
        StreamReader reader = new StreamReader(file);

        //read the first line in and split it into columns
        string [] columns = c.Split('|');
        //now add our columns (we will check to make sure the column doesnt exist before adding it)
        foreach (string col in columns)
        {
            //variable to determine if a column has been added
            bool added = false;
            string next = "";
            //our counter
            int i = 0;
            while (!(added))
            {
                string columnName = col;


                    //now check to see if the column already exists in our DataTable
                    if (!(domains.Tables[tableName].Columns.Contains(columnName)))
                    {
                        //since its not in our DataSet we will add it
                        domains.Tables[tableName].Columns.Add(columnName, typeof(string));
                        added = true;
                    }//end if
                    else
                    {
                        //we didnt add the column so increment out counter

                        i++;
                        next = "_" + i.ToString();
                        break;
                    }//end else


             }
        }
        //now we need to read the rest of the text file
        string data = reader.ReadToEnd();

        //now we will split the file on the carriage return/line feed
        //and toss it into a string array
        string [] rows = data.Split("\r".ToCharArray());
        //now we will add the rows to our DataTable
        foreach (string r in rows)
        {
            string[] items = r.Split(delimeter.ToCharArray());
            //split the row at the delimiter
            //for (int i = 0; i <= items.Count() - 1; i++)
            //{

                domains.Tables[tableName].Rows.Add(items);

            //}
        }
    }
    else
    {
        throw new FileNotFoundException("The file " + file + " could not be found");
    }

}
catch (FileNotFoundException ex)
{
    _message = ex.Message;
    return null;
}
catch (Exception ex)
{
    _message = ex.Message;
    return null;
}

//now return the DataSet
 return domains;

}      //＃endregion

   protected void Button1_Click(object sender, EventArgs e)
{



    DataSet ds = BuildDataSet(@"C:/Documents/GIFTCDS.TXT", "MyNewTable", "|");
    GridView1.DataSource = ds;
    GridView1.DataBind();


    ReportDataSource rds = new ReportDataSource("MyNewTable", ds.Tables[0]);
    ReportViewer1.LocalReport.DataSources.Clear();
    ReportViewer1.LocalReport.DataSources.Add(rds);
    ReportViewer1.DataBind();
    ReportViewer1.LocalReport.Refresh();


}