English 中文(简体)
如何仅复制最后记录,以备另一可数据[封闭]
原标题:How to copy only the last record in a DataTable to another DataTable [closed]
  • 时间:2010-06-02 10:36:39
  •  标签:
  • c#
最佳回答

确实,除非我没有一件事,否则你只能http://support.microsoft.com/kb/308909” rel=“nofollow noreferer”ImportRow。 它:

newDataTable.ImportRow(firstDataTable.Rows[firstDataTable.Rows.Count - 1]);
问题回答
DataTable dt;
DataTable dt2;

DataRow dr = dt.Rows[dt.Rows.Count - 1];
dt2.Rows.Add(dr);

直接

dt2.Rows.Add(dt.Rows[dt.Rows.Count - 1]);

如何做到这一点

    public DataTable CopyLastRowToNewTable(DataTable dt)
    {

        DataTable dtNew = dt.Clone();

        if (dt.Rows.Count > 0)
        {
               dtNew.ImportRow(dt.Rows[dt.Rows.Count - 1]);
        }

        return dtNew;

    }

抄录第一行:

dtNew.ImportRow(dt.Rows[dt.Rows[0]);

而不是

dtNew.ImportRow(dt.Rows[dt.Rows.Count - 1]);




相关问题
Anyone feel like passing it forward?

I m the only developer in my company, and am getting along well as an autodidact, but I know I m missing out on the education one gets from working with and having code reviewed by more senior devs. ...

NSArray s, Primitive types and Boxing Oh My!

I m pretty new to the Objective-C world and I have a long history with .net/C# so naturally I m inclined to use my C# wits. Now here s the question: I feel really inclined to create some type of ...

C# Marshal / Pinvoke CBitmap?

I cannot figure out how to marshal a C++ CBitmap to a C# Bitmap or Image class. My import looks like this: [DllImport(@"test.dll", CharSet = CharSet.Unicode)] public static extern IntPtr ...

How to Use Ghostscript DLL to convert PDF to PDF/A

How to user GhostScript DLL to convert PDF to PDF/A. I know I kind of have to call the exported function of gsdll32.dll whose name is gsapi_init_with_args, but how do i pass the right arguments? BTW, ...

Linqy no matchy

Maybe it s something I m doing wrong. I m just learning Linq because I m bored. And so far so good. I made a little program and it basically just outputs all matches (foreach) into a label control. ...

热门标签