C# DataGridView出现滚动条显示有关问题

C# DataGridView出现滚动条显示问题
我现在有一些数据，条数不定，我现在要做的就是不管窗体显示多大，根据窗体的大小，判断DataGridView是否出现滚动条，
如果出现滚动条，就把剩下的数据显示在另一个DataGridView中，以此类推 具体实现怎么实现，

[解决办法]
为什么不分页呢？如果你真心的要那样做的话，用JS控制
[解决办法]
这是datagridview替换系统滚动条的代码，看懂这个实现你那个不难

C# code

private void SetupScrollBars()        {            // Vertical Scroll Bar Replacement            Type t = typeof(System.Windows.Forms.DataGridView);            FieldInfo fi = t.GetField("vertScrollBar", BindingFlags.NonPublic | BindingFlags.Instance);            if (fi == null) return;            System.Windows.Forms.ScrollBar sb = fi.GetValue(this) as System.Windows.Forms.ScrollBar;            if (sb == null) return;            //sb.Scroll += new ScrollEventHandler(sb_Scroll); return;            MethodInfo mi = t.GetMethod("DataGridViewVScrolled", BindingFlags.NonPublic | BindingFlags.Instance);            if (mi == null) return;            VScrollBarEx newVSb = new VScrollBarEx();            //newVSb.Minimum = sb.Minimum;            //newVSb.Maximum = sb.Maximum;            //newVSb.SmallChange = sb.SmallChange;            //newVSb.LargeChange = sb.LargeChange;            //newVSb.Top = sb.Top;            //newVSb.AccessibleName = sb.AccessibleName;            //newVSb.Left = sb.Left;            //newVSb.Visible = sb.Visible;            newVSb.Scroll += (ScrollEventHandler)ScrollEventHandler.CreateDelegate(typeof(ScrollEventHandler), this, mi);            fi.SetValue(this, newVSb);            sb.Dispose();            this.Controls.Remove(sb);            this.Controls.Add(newVSb);            // Horizontal Scroll Bar Replacement            fi = t.GetField("horizScrollBar", BindingFlags.NonPublic | BindingFlags.Instance);            if (fi == null) return;            sb = fi.GetValue(this) as System.Windows.Forms.ScrollBar;            if (sb == null) return;            mi = t.GetMethod("DataGridViewHScrolled", BindingFlags.NonPublic | BindingFlags.Instance);            if (mi == null) return;            HScrollBarEx newHSb = new HScrollBarEx();            //newHSb.Minimum = sb.Minimum;            //newHSb.Maximum = sb.Maximum;            //newHSb.SmallChange = sb.SmallChange;            //newHSb.LargeChange = sb.LargeChange;            //newHSb.Top = sb.Top;            //newHSb.AccessibleName = sb.AccessibleName;            //newHSb.Left = sb.Left;            //newHSb.Visible = sb.Visible;            //newHSb.RightToLeft = sb.RightToLeft;            newHSb.Scroll += (ScrollEventHandler)ScrollEventHandler.CreateDelegate(typeof(ScrollEventHandler), this, mi);            fi.SetValue(this, newHSb);            sb.Dispose();            this.Controls.Remove(sb);            this.Controls.Add(newHSb);        }
[解决办法]
 

给你一些应该有帮助的代码。
1 当前展示的第一行   2 是否出现滚动条

var rowBandInfo = typeof(DataGridView).GetField("displayedBandsInfo", BindingFlags.Instance | BindingFlags.NonPublic);
           if (rowBandInfo != null)
           {
               var val = rowBandInfo.GetValue(dataGridView1);
//获取显示的第一行
               var firstDisplayedScrollingRow = (int)rowBandInfo.FieldType.GetProperty("FirstDisplayedScrollingRow", BindingFlags.Instance | BindingFlags.Public).GetValue(val, null);
}

if(dataGridView1.DisplayedRowCount(true)<dataGridView1.Rows.Count)//出现滚动条
  {  

  }

[解决办法]
很简单，一旦有滚动条必然那一行的值无法在屏幕可见
C# code
foreach (DataGridViewRow dgrv in dataGridView1.Rows){     if (!dgrv.Displayed)      {           string v = dgrv.Cells["ColumnName"].Value.ToString();//获取列值           //还可以知道索引      }      break;} 
 
[解决办法]
计算所有行高和
datagridview1.Rows.Count * 行高
看是否大于 datagridview1的Height - 标题栏高度

行高、标题栏高度  都可以知道