Question

这是我到目前为止的代码。表格填写正确。但是，如何将Edited行插入Valid表，然后从Edit表中删除它？我没有主键，因为表格是从Excel表格中导入的，只有3列名称，电子邮件和移动设备。

这是我到目前为止所做的：

＆＃13;

 protected void GridView4_RowCommand(object sender, GridViewCommandEventArgs e)
    {

        if (e.CommandName=="Update")
        {
            DataSet EditT = new DataSet();
            DataSet ValidT = new DataSet();
            if (Session["Edit"] != null)
            {
                EditT = (DataSet)Session["Edit"];
            }
            if (Session["Valid"] != null)
            {
                ValidT = (DataSet)Session["Valid"];
            }
           
            
            DataTable dtEdit = EditT.Tables[0];
            DataTable dtValid = ValidT.Tables[0];
        }
    }

＆＃13;

如果你想看看我在这里上传Excel表格是代码：

＆＃13;

    protected void UploadBtn_Click(object sender, EventArgs e)
    {
        string filename = string.Empty;
        if(FileUpload1.HasFile)
        {

            try
            {
                string[] allowFile = { ".xls", ".xlsx" };
                string fileExt = System.IO.Path.GetExtension(FileUpload1.PostedFile.FileName);
                bool isVaidFile = allowFile.Contains(fileExt);
                if (!isVaidFile)
                {
                    MessageLbl.ForeColor = System.Drawing.Color.Red;
                    MessageLbl.Text = "Must be an Excel file";
                }
                else
                {
                    int fileSize = FileUpload1.PostedFile.ContentLength;
                    if (fileSize <= 1048576)
                    {
                        filename = Path.GetFileName(Server.MapPath(FileUpload1.FileName));
                        FileUpload1.PostedFile.SaveAs(Server.MapPath("~/UploadExcel/") + filename);
                        string filePath = Server.MapPath("~/UploadExcel/") + filename;
                        OleDbConnection con = null;
                        if (fileExt == ".xls")
                        {
                            con = new OleDbConnection(@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + filePath + ";Extended Properties=\"Excel 8.0;HDR=Yes;IMEX=1\";");
                        }
                        else if (fileExt == ".xlsx")
                        {
                            con = new OleDbConnection(@"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + filePath + ";Extended Properties=\"Excel 12.0 Xml;HDR=YES;IMEX=1\";");
                        }
                        con.Open();
                        DataTable dt = con.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
                        string getExcelSheetName = dt.Rows[0]["Table_Name"].ToString();
                        string ExcelCommandText = @" SELECT * FROM [" + getExcelSheetName + @"]";
                        string ValidExcelCommandText = @"SELECT * FROM [" + getExcelSheetName + @"] where ((Email like '%@_%.com') and (Name is not null) and not ( ISNUMERIC(Mobile) = 0))";
                        string EditExcelCommandText = @" SELECT * FROM [" + getExcelSheetName + @"] where Email not like '%@_%.com' or Email is null or Name is null or Mobile is null or Mobile not like '^[[:digit:]]+$'";
                        OleDbCommand ExcelCommand = new OleDbCommand(ExcelCommandText, con);
                        OleDbCommand EditExcelCommand = new OleDbCommand(EditExcelCommandText, con);
                        OleDbCommand ValidExcelCommand = new OleDbCommand(ValidExcelCommandText, con);
                        OleDbDataAdapter EditAdapter = new OleDbDataAdapter(EditExcelCommand);
                        OleDbDataAdapter ValidAdapter = new OleDbDataAdapter(ValidExcelCommand);
                        OleDbDataAdapter ExcelAdapter = new OleDbDataAdapter(ExcelCommand);
                        DataSet ExcelDataSet = new DataSet();
                        DataSet EditDataSet = new DataSet();
                        DataSet ValidDataset = new DataSet();
                        Session["Edit"] = EditDataSet;
                        Session["Valid"] = ValidDataset;
                       
                        EditAdapter.Fill(EditDataSet);
                        ValidAdapter.Fill(ValidDataset);
                        ExcelAdapter.Fill(ExcelDataSet);
                        con.Close();
                        GridView5.DataSource = ValidDataset;
                        GridView4.DataSource = EditDataSet;
                        GridView3.DataSource = ExcelDataSet;
                        GridView3.DataBind();
                        GridView4.DataBind();
                        GridView5.DataBind();
                    }
                    else
                    {
                        MessageLbl.Text = "Attachment file size should not be greater than 1 MB";
                    }
                }
            }
            catch (Exception ex)
            {
                MessageLbl.Text = "Error occurred while uploading file. " + ex.Message;
            }
        
        }
        else
        {
            MessageLbl.Text = "";
        }
       
        
    }

＆＃13;

Answer 1

假设数据表中的列相同，您可以使用其索引标识该行。您可以将行的值复制到第二个表中的新行。您不能只添加属于dtEdit的行，除非您使用.ItemArray，否则将抛出错误。

        DataSet EditT = new DataSet();
        DataSet ValidT = new DataSet();

        DataRow row;

        DataTable dtEdit = EditT.Tables[0];
        DataTable dtValid = ValidT.Tables[0];
        //Assuming columns match exactly;

        int rowIndex = 0; //Find the index of the row that is clicked.

        row = dtEdit.Rows[rowIndex];

        dtValid.Rows.Add(row.ItemArray); //NB: Must use .ItemArray as row belongs to dtEdit.
        dtEdit.Rows[rowIndex].Delete();

单击更新按钮后，我想将更新的数据集插入到新数据集中，同时将其从旧数据集中删除

1 个答案: