Question

我正在将.txt文件导入DataGridView，现在效果相当不错。

不幸的是，唯一重要的值无法正确显示。

价值（德国追踪编号）为：“00340433914967320068”

请参阅随附的屏幕截图（第F2列）数据网格中的显示方式。所有其他价值观都像魅力一样。

更长的像："[x,xx] Gewicht<0>N^[0,00] DHL Paket<101>L^"

代码是：

private void buttonEasy1_Click(object sender, EventArgs e)
    {
        OpenFileDialog openFileDialog1 = new OpenFileDialog();
        if (openFileDialog1.ShowDialog() ==          System.Windows.Forms.DialogResult.OK)
        {
            this.textBox1.Text = openFileDialog1.FileName;
            this.labeltxt1.Text = openFileDialog1.SafeFileName;

            // .txt einlesen Anfang

            string[] lines1 = { "[" + labeltxt1.Text + "]", "Format = Delimited(;)", "ColNameHeader = False "};
            System.IO.File.WriteAllLines(@"C:\*\schema.ini", lines1);


            string FileName1 = textBox1.Text;

            OleDbConnection conn1 = new OleDbConnection("Provider=Microsoft.Jet.OleDb.4.0; Data Source = " +
                     Path.GetDirectoryName(FileName1) + ";Extended Properties='text;';");

            conn1.Open();

            OleDbDataAdapter adapter1 = new OleDbDataAdapter
                   ("SELECT * FROM " + Path.GetFileName(FileName1), conn1);

            DataSet ds1 = new DataSet("Temp");
            adapter1.Fill(ds1);

            conn1.Close();

            dataGridView1.DataSource = ds1;
            dataGridView1.DataMember = "Table";

            // .txt einlesen Ende

Answer 1

尝试更改DataGrid列格式。例如：

dataGridView1.Columns[1].DefaultCellStyle.Format = "N0";

或

dataGridView1.Columns[1].DefaultCellStyle.Format = "###################";

Answer 2

有关史蒂夫评论的进一步信息 -

我尝试了这些解决方案：

How To Change DataType of a DataColumn in a DataTable?

DataTable dtCloned = dt.Clone();
dtCloned.Columns[1].DataType = typeof(String);
foreach (DataRow row in dt.Rows) 
{
dtCloned.ImportRow(row);
}

和

adapter.FillSchema(table, SchemaType.Source);
table.Columns[1].DataType = typeof (String);
adapter.Fill(table);

没有变化 - 仍然显示3,40433191496732E + 17而不是00340433914967320587

将文本文件加载到数据网格中并且长数字显示不正确

2 个答案: