如何能让datagridview中的列移动(左移或右移)
思路：
1. 先在当前列的左边或者右边插入一个空列
2. 按行将当前列（被移动列）的值复制到 新列
3. 移除当前列
代码如下：
///
/// 获取当前列
///
public DataGridViewColumn CurCol
{
get
{
if (neoDataGrid1.CurrentCell != null)
{
int col_index = neoDataGrid1.CurrentCell.ColumnIndex;
return neoDataGrid1.Columns[col_index];
}
return null;
}
}
///
/// 按行将数据复制到新网格列
///
/// 源列
///
public DataGridViewColumn CopyDataGridColumn(DataGridView dgList, DataGridViewColumn colFrom, DataGridViewColumn colTo)
{
//DataGridViewColumn colTo = null;
foreach (DataGridViewRow dgRow in dgList.Rows)
{
foreach (DataGridViewCell dgCell in dgRow.Cells)
{
if (dgCell.ColumnIndex == colFrom.Index)
{
//dgRow.Cells[colTo.Name].Value = dgCell.Value;
dgRow.Cells[colTo.Index].Value = dgCell.Value;
break;
}
}
}
return null;
}
///
/// 移动列
///
/// DataGridView 控件
/// 当前列
/// 移动方向
/// 移动位置
public void MoveDataGridColumn(DataGridView dgList, DataGridViewColumn curCol,
NNERP.NEOCommon.EnumPublic.EnumSelectAction direction,int pos)
{
DataGridViewTextBoxColumn temp = new DataGridViewTextBoxColumn();
temp.Name = "temp";
temp.HeaderText = curCol.HeaderText;
if (direction.ToString() == "MoveFirst" || direction.ToString() == "MovePrevious")
{
if (curCol.Index >= 1 && curCol.Index <= dgList.Columns.Count - 1)
{
//插入一个新列
dgList.Columns.Insert(pos, temp);
//复制到新列
CopyDataGridColumn(dgList, curCol, temp);
//移除原来那一列
dgList.Columns.RemoveAt(curCol.Index);
}
}
else if(direction.ToString() == "MoveNext" || direction.ToString() == "MoveLast")
{
if (curCol.Index >= 0 && curCol.Index <= dgList.Columns.Count - 1)
{
//插入一个新列
dgList.Columns.Insert(pos, temp);
//复制到新列
CopyDataGridColumn(dgList, curCol, temp);
//移除原来那一列
dgList.Columns.RemoveAt(curCol.Index);
}
}
}
///
/// 移动列
///
/// DataGridView 控件
/// 当前列
/// 移动方向
public void MoveDataGridColumn(DataGridView dgList,DataGridViewColumn col,NNERP.NEOCommon.EnumPublic.EnumSelectAction direction)
{
DataGridViewTextBoxColumn temp = new DataGridViewTextBoxColumn();
temp.Name="temp";
temp.HeaderText = col.HeaderText;
switch (direction.ToString())
{
case "MoveFirst":
MoveDataGridColumn(dgList, col,direction, 0);
break;
case "MoveLast":
MoveDataGridColumn(dgList, col, direction, dgList.Columns.Count - 1);
break;
case "MoveNext":
MoveDataGridColumn(dgList, col, direction, col.Index + 2);
break;
case "MovePrevious":
MoveDataGridColumn(dgList, col, direction, col.Index - 1);
break;
default:
break;
}//end swich
}
调用：
private void 左移ToolStripMenuItem_Click(object sender, EventArgs e)
{
MoveDataGridColumn(neoDataGrid1, CurCol, NNERP.NEOCommon.EnumPublic.EnumSelectAction.MovePrevious);
}
private void 右移ToolStripMenuItem_Click(object sender, EventArgs e)
{
MoveDataGridColumn(neoDataGrid1, CurCol, NNERP.NEOCommon.EnumPublic.EnumSelectAction.MoveNext);
}