Question

我对编程很新。让我们说，我有一个优秀的A列，B列，C列和D列。我想要的是读取这个excel文件，将所有数据放入datagridview，并从中选择某些列并转移到另一个新的datagridview。

我遇到的问题是我不知道如何从datagridview中放置某些列并将它们转移到另一个新的datagridview。

任何人都可以帮助我!! 请！

using System;
using System.Collections;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Data.OleDb;
using Excel = Microsoft.Office.Interop.Excel;
using System.Text.RegularExpressions;

namespace Testing9
{
public partial class ExcelModifer : Form
{
    public ExcelModifer()
    {
        InitializeComponent();
    }

    private void btnChooseFile_Click(object sender, EventArgs e)
    {
        OpenFileDialog openFileDialog1 = new OpenFileDialog();
        if (openFileDialog1.ShowDialog() == System.Windows.Forms.DialogResult.OK)
        {
            this.textBox_path.Text = openFileDialog1.FileName;
            LoadExcel();
        }
    }

    private void LoadExcel()
    {
        OleDbConnection oconn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + textBox_path.Text + ";Extended Properties=\"Excel 8.0;HDR=NO;\";");
        oconn.Open();
        DataTable dbSchema = oconn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
        if (dbSchema == null || dbSchema.Rows.Count < 1)
        {
            throw new Exception("Error: Could not determine the name of the first worksheet.");
        }
        string firstSheetName = dbSchema.Rows[0]["TABLE_NAME"].ToString();
        OleDbDataAdapter myDataAdapter = new OleDbDataAdapter("Select * from [" + firstSheetName + "]", oconn);
        DataTable dt = new DataTable();
        myDataAdapter.Fill(dt);
        dataGridView1.DataSource = dt;
    }

    private void button1_Click(object sender, EventArgs e)
    {
        saveFileDialog1.InitialDirectory = "C:";
        saveFileDialog1.Title = "Save as Excel File";
        saveFileDialog1.FileName = "";
        saveFileDialog1.Filter = "Excel Files(2003)|*.xls|Excel Files(2007)|*.xlsx";
        if (saveFileDialog1.ShowDialog() != DialogResult.Cancel)
        {
            Microsoft.Office.Interop.Excel.Application ExcelApp = new Microsoft.Office.Interop.Excel.Application();
            ExcelApp.Application.Workbooks.Add(Type.Missing);
            //Change properties of the Workbook
            ExcelApp.Columns.ColumnWidth = 20;
            //Storing Each row and column value to excel sheet
            for (int i = 0; i < dataGridView1.Rows.Count; i++)
            {
                for (int j = 0; j < dataGridView1.Columns.Count; j++)
                {
                    ExcelApp.Cells[i + 1, j + 1] = dataGridView1.Rows[i].Cells[j].Value.ToString();
                }
            }
            ExcelApp.ActiveWorkbook.SaveCopyAs(saveFileDialog1.FileName.ToString());
            ExcelApp.ActiveWorkbook.Saved = true;
            ExcelApp.Quit();
        }
    }
}
}

Answer 1

您可以迭代DataGridViewRows并逐步为您分配值。

foreach (DataGridViewRow row in yourDataGrid.Rows)
    {
        foreach (DataGridViewCell cell in row.Cells)
        {
           // make some assignment in this block.
        }
     }

Answer 2

您应该创建另一个数据表并将某个列添加到此数据表，然后将第二个数据绑定到其他gridview。

如何将某些列放到另一个datagridview？

2 个答案: