Question

我使用ASP.net和C＃将我的CSV文件上传到DataGrid并且它有效，但我尝试使用Table而不是DataGrid并且无法使用。所以我必须在我的代码中更改以查看表中的数据这两行代码我使用了dataGrid

 DataGrid.DataSource = GetDataTableFromCSVFile(currentPath);
 DataGrid.DataBind();

以及所有代码

 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Web;
 using System.Web.UI;
 using System.Web.UI.WebControls;
 using System.Data;
 using System.IO;
 using Microsoft.VisualBasic.FileIO;

 namespace Csvfile
 {
 public partial class WebForm1 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
    }

    protected void btCSVUpload_Click(object sender, EventArgs e)
    {
        if (FileUploadControl.HasFile)
        {
            try
            {
                string currentPath = Server.MapPath("~/") +
                              Path.GetFileName(FileUploadControl.FileName);
                FileUploadControl.SaveAs(currentPath);

                DataGrid.DataSource = GetDataTableFromCSVFile(currentPath);
                DataGrid.DataBind();
                lbStatus.Text = "CSV Upload status: File uploaded!";

                File.Delete(currentPath);
            }
            catch (Exception ex)
            {
                lbStatus.Text = @"CSV Upload status: The file could not be  uploaded. 
                The following error has occured: " + ex.Message;
            }
        }
        else
        {
            lbStatus.Text = "CSV Upload status: File not found.";
        }
    }

    private static DataTable GetDataTableFromCSVFile(string csvfilePath)
    {
        DataTable csvData = new DataTable();
        using (TextFieldParser csvReader = new TextFieldParser(csvfilePath))
        {
            csvReader.SetDelimiters(new string[] { "," });
            csvReader.HasFieldsEnclosedInQuotes = true;

            //Read columns from CSV file, remove this line if columns not exits  
            string[] colFields = csvReader.ReadFields();

            foreach (string column in colFields)
            {
                DataColumn datecolumn = new DataColumn(column);
                datecolumn.AllowDBNull = true;
                csvData.Columns.Add(datecolumn);
            }

            while (!csvReader.EndOfData)
            {
                string[] fieldData = csvReader.ReadFields();
                //Making empty value as null
                for (int i = 0; i < fieldData.Length; i++)
                {
                    if (fieldData[i] == "")
                    {
                        fieldData[i] = null;
                    }
                }
                csvData.Rows.Add(fieldData);
            }
        }
        return csvData;
    }
}

}

Answer 1

ASP.NET在构建响应时将DataGrid转换为HTML表。如果从浏览器查看源代码，则可以看到网格呈现为HTML表格。

将csv文件上传到表而不是DataGrid

1 个答案: