Question

我试着检查是否有任何column1，任何一个单元格都不为空。我想制作然后为空并将文件复制到下一个列单元格。什么，我的想法是检查一个特定的Column1- 所有单元格是否允许说“COLUMN1”其中一个单元格不为空。然后我需要文件[我已将文件路径附加到该特定单元格]以复制到下一个column2。同时我想将文件复制到桌面上的文件夹中假设位置是 C：/ user / elec / copy ，我想删除Column1 -cell数据。

我该怎么办？链接我正在尝试做什么.. https://imageshack.com/i/p58FpXoUj

我正在尝试的代码

    private void button6_Click(object sender, EventArgs e)
    {
        if(dataGridView1.Columns["column1"].Cell[i] != string.Empty)
        {
            dataGridView1.row.Cells[0] = dataGridView1.Columns["column2"].Cells[0];// trying to copy the path from column1 cell to column2 cell
            //error above line at row and cells
            string fileName = Convert.ToString(e.Value);//<<--  error here in value
            if (!string.IsNullOrEmpty(fileName))
            {

                byte[] objData;

                FileInfo fileInfo = new FileInfo(fileName);
                string fileExtension = fileInfo.Extension;
                string s = dataGridView1.Rows[e.RowIndex].Cells[7].Value.ToString();// error here in rowindex..
                objData = File.ReadAllBytes(s);
                File.WriteAllBytes("C:/user/elec/copy", s); //trying to download the file from column1---<< error here

            }

            dataGridView1.row.Cells[0] = string.Empty;
        }

    }

Answer 1

我解决了这个问题!!!!

 private void button6_Click(object sender, EventArgs e)
{
    string copyPath = @"C:\user\elec\copy";
 if (!System.IO.Directory.Exists(copyPath))
System.IO.Directory.CreateDirectory(copyPath);
for (int i = 0; i < dataGridView1.Rows.Count; i++)
{
  if (dataGridView1.Rows[i].Cells[2].Value != null && 
    !String.IsNullOrEmpty(dataGridView1.Rows[i].Cells[2].Value.ToString()))
{
    string filePath = dataGridView1.Rows[i].Cells[2].Value.ToString();
    if (System.IO.File.Exists(filePath))
    {                   
        string fileName = System.IO.Path.GetFileName(filePath);
        string newpath = System.IO.Path.Combine(copyPath, fileName);
        System.IO.File.Copy(filePath, newpath, true);
        dataGridView1.Rows[i].Cells[3].Value = newpath;

        try
        {
            SqlConnection con = new SqlConnection(@"Data Source=SREEJITHMOHA492\SQLEXPRESS;Initial Catalog=cndb;Integrated Security=True");
         {
                con.Open();
                SqlCommand cmd = con.CreateCommand();
                cmd.CommandText = "update cncinfo set draftpath=@draftpath,releasepath=@releasepath Where part=@part";
                cmd.Parameters.Add("@draftpath",SqlDbType.NVarChar).Value =filePath;
                cmd.Parameters.Add("@releasepath",SqlDbType.NVarChar).Value =newpath;
                cmd.CommandText = "update cncinfo set draftpath='" + string.Empty + "',releasepath=@releasepath Where part=@part";
                //you must have the id value in datagridview to update the specific record.
                cmd.Parameters.Add("@part",SqlDbType.NVarChar).Value =Convert.ToString(dataGridView1.Rows[i].Cells["Part Number"].Value);
                cmd.ExecuteNonQuery();
                con.Close();
         }
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message);
        } 
    }
    dataGridView1.Rows[i].Cells[2].Value = string.Empty;
}
}
}

如何检查列单元格不为空并将文件复制到下一列单元格，也复制到Windows文件夹

1 个答案: