将文本文件上传到数据表

如何解决将文本文件上传到数据表

我正在尝试允许用户将现有信息上载到数据表。这是用于上传的代码：

private void label30_Click(object sender,EventArgs e)
        {
            OpenFileDialog ofd = new OpenFileDialog();
            if (ofd.ShowDialog() == DialogResult.OK)
            {
                StreamReader read = new StreamReader(File.OpenRead(ofd.FileName));
                string[] lines = File.ReadAllLines(ofd.FileName);
                string[] values;

                for (int i = 31; i < lines.Length; i++)
                {
                    values = lines[i].ToString().Split(',');
                    string[] row = new string[values.Length];

                    for (int j = 0; j < values.Length; j++)
                    {
                        row[j] = values[j].Trim();
                    }
                    stkSheetdgv.Rows.Add(row);
                    read.Close();
                    read.Dispose();
                }
                
            }
        }

文本文件中还有很多其他信息，因此是int i = 31的原因。我得到System.InvalidOperationException: 'Rows cannot be programmatically added to the DataGridView's rows collection when the control is data-bound.'

有人可以告诉我要进行这项工作缺少什么吗？如果需要，我可以为dt添加更多代码。让我知道。

            stkSheetdgv.AutoGenerateColumns = false;
            DataTable dt = new DataTable();
            dt.Columns.Add("Wire",typeof(String));
            dt.Columns.Add("Pole",typeof(String));
            dt.Columns.Add("Primary Unit",typeof(String));
            dt.Columns.Add("Down Guy",typeof(String));
            dt.Columns.Add("Anchor",typeof(String));
            dt.Columns.Add("Transformer",typeof(String));
            dt.Columns.Add("Ground",typeof(String));
            dt.Columns.Add("Riser/Disconnect",typeof(String));
            dt.Columns.Add("Misc.",typeof(String));
            DataGridViewComboBoxColumn wire = new DataGridViewComboBoxColumn();
            var wirelist = new List<string>() {"AAC 1/0 POPPY","AAC 477 COSMOS"};
            wire.DataSource = wirelist;
            wire.HeaderText = "Wire";
            wire.DataPropertyName = "Wire";
            DataGridViewComboBoxColumn pole = new DataGridViewComboBoxColumn();
            var polelist = new List<string>() {"30C4 CCA","30C5 CCA"};
            pole.DataSource = polelist;
            pole.HeaderText = "Pole";
            pole.DataPropertyName = "Pole";
            DataGridViewComboBoxColumn primary = new DataGridViewComboBoxColumn();
            var primarylist = new List<string>() {"C1-LD","C2-LD"};
            primary.DataSource = primarylist;
            primary.HeaderText = "Primary Unit";
            primary.DataPropertyName = "Primary Unit";
            DataGridViewComboBoxColumn down = new DataGridViewComboBoxColumn();
            var downlist = new List<string>() {"E1-5-144","E1-5-144P"};
            down.DataSource = downlist;
            down.HeaderText = "Down Guy";
            down.DataPropertyName = "Down Guy";
            DataGridViewComboBoxColumn anch = new DataGridViewComboBoxColumn();
            var anchlist = new List<string>() {"F1-2 Expansion","F1-2 Plate"};
            anch.DataSource = anchlist;
            anch.HeaderText = "Anchor";
            anch.DataPropertyName = "Anchor";
            DataGridViewComboBoxColumn trans = new DataGridViewComboBoxColumn();
            var translist = new List<string>() { "G311-15kVA","G311-25kVA"};
            trans.DataSource = translist;
            trans.HeaderText = "Transformer";
            trans.DataPropertyName = "Transformer";
            DataGridViewComboBoxColumn ground = new DataGridViewComboBoxColumn();
            var groundlist = new List<string>() { "M2-12","M2-11" };
            ground.DataSource = groundlist;
            ground.HeaderText = "Ground";
            ground.DataPropertyName = "Ground";
            DataGridViewComboBoxColumn rise = new DataGridViewComboBoxColumn();
            var riserlist = new List<string>() { "M8-60-10'","M8-100-10'"};
            rise.DataSource = riserlist;
            rise.HeaderText = "Riser/Disconnect";
            rise.DataPropertyName = "Riser/Disconnect";
            DataGridViewComboBoxColumn misc = new DataGridViewComboBoxColumn();
            var misclist = new List<string>() { "M5-5LD","M5-5HD"};
            misc.DataSource = misclist;
            misc.HeaderText = "Misc.";
            misc.DataPropertyName = "Misc.";
            stkSheetdgv.DataSource = dt;
            stkSheetdgv.Columns.AddRange(wire,pole,primary,down,anch,trans,ground,rise,misc);
            stkSheetdgv.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.AllCells;

解决方法

解决此问题的方法有两种，一种是通过删除DataSource上的stkSheetdgv.DataSource = dt;的分配（例如，删除DataGridView），或者是添加到{{1} }明确地：

代码

DataSource

修改

收到错误的原因是csv的列数多于private void label30_Click(object sender,EventArgs e) { DataTable dataTable = (DataTable)stkSheetdgv.DataSource; OpenFileDialog ofd = new OpenFileDialog(); if (ofd.ShowDialog() == DialogResult.OK) { using (StreamReader read = new StreamReader(File.OpenRead(ofd.FileName))) { string[] lines = File.ReadAllLines(ofd.FileName); string[] values; for (int i = 31; i < lines.Length; i++) { values = lines[i].ToString().Split(','); var dataRow = dataTable.NewRow(); for (int j = 0; j < values.Length; j++) { dataRow[j] = values[j].Trim(); } dataTable.Rows.Add(dataRow); dataTable.AcceptChanges(); } } } } 中指定的列数。我使用的CSV文件是：

DataTable

哪个对我来说工作得很好。