怎么获取datagridview列头的值

Question

我想根据列头的名字获取不同的数据用于处理.我刚学，不太明白，请高手指教

Answer 1

dataGridView1.Columns[0].HeaderText
dataGridView1.Columns[0].Name

Answer 2

dataGridView1.Columns[0].HeaderCell.Value = "编号"; //第一列
dataGridView1.Columns[1].HeaderCell.Value = "姓名"; //第二列

Answer 3

要想获得第一列的值   我这样写的
int  sam= dataGridView1.RowCount;
int V=0；
for (int iV = 0; iV < sam - 1; iV++)
{
   strVoltage[V] = dataGridView1[ 0,iV].Value.ToString();        
    V++;
}
但是调试时   为何出错    

Answer 4

strVoltage[V] = dataGridView1[ 0,iV].Value.ToString();    
这句改成下面这句看看
if(dataGridView1[ 0,iV].Value!=null)
  strVoltage[V] = dataGridView1[ 0,iV].Value.ToString();    

Answer 5

未处理 System.NullReferenceException
  Message="未将对象引用设置到对象的实例。"
  Source="电池检测软件"
  StackTrace:
       在 电池检测软件.frmlishishuju.trvlishi_NodeMouseDoubleClick(Object sender, TreeNodeMouseClickEventArgs e) 位置 E:\电池检测软件\电池检测软件\frmlishishuju.cs:行号 228
       在 System.Windows.Forms.TreeView.OnNodeMouseDoubleClick(TreeNodeMouseClickEventArgs e)
       在 System.Windows.Forms.TreeView.WndProc(Message& m)
       在 System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
       在 System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
       在 System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
       在 System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
       在 System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
       在 System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
       在 System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
       在 System.Windows.Forms.Application.Run(Form mainForm)
       在 电池检测软件.Program.Main() 位置 E:\电池检测软件\电池检测软件\Program.cs:行号 18
       在 System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)
       在 System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
       在 Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
       在 System.Threading.ThreadHelper.ThreadStart_Context(Object state)
       在 System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       在 System.Threading.ThreadHelper.ThreadStart()
  InnerException: 

Answer 6

你到底哪句出错，监控一下啊
是不是strVoltage数组没有new吧
如：strVoltage=new string[sam];

Answer 7

int sam= dataGridView1.RowCount;
string[] strVoltage = new string[sam];
int V=0；
for (int iV = 0; iV < sam - 1; iV++)
{
  if(dataGridView1[ 0,iV].Value!=null)
     strVoltage[V] = dataGridView1[ 0,iV].Value.ToString();   
  V++;
}

Answer 8

就是没有new一下    谢谢了