C# DataTable筛选、替换dt

C# DataTable筛选dt

DataTable dtNew =dt.Clone(); 
for (int i = 0; i < drArr.Length;i++) 
{ 
   dtNew.ImportRow(drArr[i]); 

}

C#动态替换dt内容

string evtpost = dtSign.Rows[i]["SIGN_MODE"].ToString();
 if (evtpost == "同意") {
   dtSign.Rows[i]["SIGN_MODE"] = evtpost.Replace("同意", "0");
}
else
{
    dtSign.Rows[i]["SIGN_MODE"] = evtpost.Replace("拒絕", "1");
}