C#输入数组长于使用removeAt后的列数
我很清楚,在尝试合并ZRP和08-0729-01-MAR时,从datatable中显式删除列后会导致此问题,因此是否仍有方法在不获得异常的情况下删除列?请帮忙C#输入数组长于使用removeAt后的列数,c#,datatable,C#,Datatable,我很清楚,在尝试合并ZRP和08-0729-01-MAR时,从datatable中显式删除列后会导致此问题,因此是否仍有方法在不获得异常的情况下删除列?请帮忙 public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { DataTable dt = new DataTable();
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
DataTable dt = new DataTable();
string filepath = @"C:\Users\2563911\source\repos\test.txt";
using (System.IO.TextReader tr = File.OpenText(filepath))
{
string line;
while ((line = tr.ReadLine()) != null)
{
if (!line.StartsWith("-"))
{
if (line.Length < 82 || line.Contains("MY01"))
{
string[] items = line.Replace("MY01", "").Split(new string[] { " " }, StringSplitOptions.RemoveEmptyEntries);
try
{
if (dt.Columns.Count == 0)
{
// Create the data columns for the data table based on the number of items
// on the first line of the file
for (int i = 0; i < items.Length; i++)
{
dt.Columns.Add(new DataColumn("Column" + i, typeof(string)));
}
}
dt.Rows.Add(items);
foreach (DataRow dr in dt.Rows)
{
dr[2] = dr[1].ToString() + dr[2].ToString();
}
dt.Columns.RemoveAt(1);
}
catch (System.ArgumentException c)
{
MessageBox.Show(c.Message);
break;
}
}
}
}
//show it in gridview
this.DataGridView.DataSource = dt;
}
}
}
public Form1()
{
初始化组件();
}
私有void Form1\u加载(对象发送方、事件参数e)
{
DataTable dt=新的DataTable();
字符串文件路径=@“C:\Users\2563911\source\repos\test.txt”;
使用(System.IO.TextReader tr=File.OpenText(filepath))
{
弦线;
而((line=tr.ReadLine())!=null)
{
如果(!line.StartsWith(“-”))
{
if(line.Length<82 | | line.Contains(“MY01”))
{
string[]items=line.Replace(“MY01”,“”).Split(新字符串[]{”“},StringSplitOptions.RemoveEmptyEntries);
尝试
{
如果(dt.Columns.Count==0)
{
//根据项目数为数据表创建数据列
//在文件的第一行
对于(int i=0;i
示例文本文件:
MY01思科ZPRP 08-0729-01-3月08-0729-01MY01思科ZPRP 08-0729-01-3月08-0729-01
MY01思科ZPRP 08-0729-01-3月08-0729-01
MY01 CISCO ZPRP 10-2919-01$1使用
DataRow row=dt.NewRow()
并填充行
。您必须为您关心的列显式设置值,但这肯定会避免此异常。您应该在while循环完成后执行dt.columns.RemoveAt(1)