如何允许向上或向下移动DataGridView（DGV）中的选定行。我之前用ListView完成了这个。不幸的是，对我来说，更换DGV不是一个选择（ curses ）。顺便说一句，DGV数据源是一个通用集合。
DGV侧面有两个按钮，是的，UP＆amp;下。任何人都可以帮我指出正确的方向。如果它有帮助的话，我确实有我用于ListView的代码（它没有帮助我）。
答案 0 :(得分：28)
只是为了扩展Yoopergeek的答案，这就是我所拥有的。 我没有使用DataSource（数据在表单关闭时被删除到注册表，并在表单加载时重新加载）
此示例将阻止行离开网格并丢失，并重新选择此人所在的单元格。
为了简化复制/粘贴，我修改了所以你只需要将“gridTasks”更改为你的DataGridView名称，而不是在整个代码中重命名。
此解决方案仅适用于所选的单个单元格/行。
private void btnUp_Click(object sender, EventArgs e)
{
DataGridView dgv = gridTasks;
try
{
int totalRows = dgv.Rows.Count;
// get index of the row for the selected cell
int rowIndex = dgv.SelectedCells[ 0 ].OwningRow.Index;
if ( rowIndex == 0 )
return;
// get index of the column for the selected cell
int colIndex = dgv.SelectedCells[ 0 ].OwningColumn.Index;
DataGridViewRow selectedRow = dgv.Rows[ rowIndex ];
dgv.Rows.Remove( selectedRow );
dgv.Rows.Insert( rowIndex - 1, selectedRow );
dgv.ClearSelection();
dgv.Rows[ rowIndex - 1 ].Cells[ colIndex ].Selected = true;
}
catch { }
}
private void btnDown_Click(object sender, EventArgs e)
{
DataGridView dgv = gridTasks;
try
{
int totalRows = dgv.Rows.Count;
// get index of the row for the selected cell
int rowIndex = dgv.SelectedCells[ 0 ].OwningRow.Index;
if ( rowIndex == totalRows - 1 )
return;
// get index of the column for the selected cell
int colIndex = dgv.SelectedCells[ 0 ].OwningColumn.Index;
DataGridViewRow selectedRow = dgv.Rows[ rowIndex ];
dgv.Rows.Remove( selectedRow );
dgv.Rows.Insert( rowIndex + 1, selectedRow );
dgv.ClearSelection();
dgv.Rows[ rowIndex + 1 ].Cells[ colIndex ].Selected = true;
}
catch { }
}
答案 1 :(得分：9)
这应该有效。我使用BindingSource而不是将我的List直接绑定到DataGridView：
private List<MyItem> items = new List<MyItem> {
new MyItem {Id = 0, Name = "Hello"},
new MyItem {Id = 1, Name = "World"},
new MyItem {Id = 2, Name = "Foo"},
new MyItem {Id = 3, Name = "Bar"},
new MyItem {Id = 4, Name = "Scott"},
new MyItem {Id = 5, Name = "Tiger"},
};
private BindingSource bs;
private void Form1_Load(object sender, EventArgs e)
{
bs = new BindingSource(items, string.Empty);
dataGridView1.DataSource = bs;
}
private void button1_Click(object sender, EventArgs e)
{
if (bs.Count <= 1) return; // one or zero elements
int position = bs.Position;
if (position <= 0) return; // already at top
bs.RaiseListChangedEvents = false;
MyItem current = (MyItem)bs.Current;
bs.Remove(current);
position--;
bs.Insert(position, current);
bs.Position = position;
bs.RaiseListChangedEvents = true;
bs.ResetBindings(false);
}
private void button2_Click(object sender, EventArgs e)
{
if (bs.Count <= 1) return; // one or zero elements
int position = bs.Position;
if (position == bs.Count - 1) return; // already at bottom
bs.RaiseListChangedEvents = false;
MyItem current = (MyItem)bs.Current;
bs.Remove(current);
position++;
bs.Insert(position, current);
bs.Position = position;
bs.RaiseListChangedEvents = true;
bs.ResetBindings(false);
}
public class MyItem
{
public int Id { get; set; }
public String Name { get; set; }
}
答案 2 :(得分：6)
如果您以编程方式更改集合中项目的顺序，则DGV应自动反映该项目。
邋,,半工作的例子：
List<MyObj> foo = DGV.DataSource;
int idx = DGV.SelectedRows[0].Index;
int value = foo[idx];
foo.Remove(value);
foo.InsertAt(idx+1, value)
其中一些逻辑可能是错误的，这可能也不是最有效的方法。此外，它没有考虑多行选择。
嗯，最后一件事，如果你使用标准的List或Collection，这将不会顺利进行。列表和集合on't发出DGV发现对数据绑定有用的事件。每次更改集合时都可以“打嗝”数据绑定，但更好的解决方案是使用System.ComponentModel.BindingList。当您更改BindingList的顺序时，DGV应自动反映更改。
答案 3 :(得分：1)
首先填充您的datagridview，例如，您的表中有3个列
DataTable table = new DataTable();
table.Columns.Add("col1");
table.Columns.Add("col2");
table.Columns.Add("col3");
foreach (var i in yourTablesource(db,list,etc))
{
table.Rows.Add(i.col1, i.col2, i.col2);
}
datagridview1.DataSource = table;
然后，在按钮上单击
int rowIndex;
private void btnUp_Click(object sender, EventArgs e)
{
rowIndex = datagridview1.SelectedCells[0].OwningRow.Index;
DataRow row = table.NewRow();
row[0] = datagridview1.Rows[rowIndex].Cells[0].Value.ToString();
row[1] = datagridview1.Rows[rowIndex].Cells[1].Value.ToString();
row[2] = datagridview1.Rows[rowIndex].Cells[2].Value.ToString();
if (rowIndex > 0)
{
table.Rows.RemoveAt(rowIndex);
table.Rows.InsertAt(row, rowIndex - 1);
datagridview1.ClearSelection();
datagridview1.Rows[rowIndex - 1].Selected = true;
}
}
对按钮进行相同的操作，只需将row index方法中的rowIndex - 1从rowindex + 1更改为buttonDown_Click
答案 4 :(得分：0)
正在寻找这个向上/向下按钮的东西，很高兴我找到了这个。 最好在返回后放入bs.RaiseListChangedEvents = false语句，否则它不会一直有效。
在C＃3.0中，您可以向BindingSource添加两个扩展方法，如下所示：
public static class BindingSourceExtension
{
public static void MoveUp( this BindingSource aBindingSource )
{
int position = aBindingSource.Position;
if (position == 0) return; // already at top
aBindingSource.RaiseListChangedEvents = false;
object current = aBindingSource.Current;
aBindingSource.Remove(current);
position--;
aBindingSource.Insert(position, current);
aBindingSource.Position = position;
aBindingSource.RaiseListChangedEvents = true;
aBindingSource.ResetBindings(false);
}
public static void MoveDown( this BindingSource aBindingSource )
{
int position = aBindingSource.Position;
if (position == aBindingSource.Count - 1) return; // already at bottom
aBindingSource.RaiseListChangedEvents = false;
object current = aBindingSource.Current;
aBindingSource.Remove(current);
position++;
aBindingSource.Insert(position, current);
aBindingSource.Position = position;
aBindingSource.RaiseListChangedEvents = true;
aBindingSource.ResetBindings(false);
}
}
最后很好地使用扩展方法而不是所有那些糟糕的String例子..; - ）
答案 5 :(得分：0)
DataGridViewRow BeginingRow = new DataGridViewRow();
int BeginingRowIndex ;
private void DataGridView1_CellMouseUp(object sender, DataGridViewCellMouseEventArgs e)
{
if (e.Button != MouseButtons.Left ||e.RowIndex < 0 ) return;
if (BeginingRowIndex > e.RowIndex)
{
DataGridView1.Rows.Insert(e.RowIndex);
foreach (DataGridViewCell cellules in BeginingRow.Cells)
{
DataGridView1.Rows[e.RowIndex].Cells[cellules.ColumnIndex].Value = cellules.Value;
}
DataGridView1.Rows.RemoveAt(BeginingRowIndex + 1);
}
else
{
DataGridView1.Rows.Insert(e.RowIndex +1);
foreach (DataGridViewCell cellules in BeginingRow.Cells)
{
DataGridView1.Rows[e.RowIndex+1].Cells[cellules.ColumnIndex].Value = cellules.Value;
}
DataGridView1.Rows.RemoveAt(BeginingRowIndex);
}
DataGridView1.RowsDefaultCellStyle.ApplyStyle(BeginingRow.DefaultCellStyle);
DataGridView1.Rows[e.RowIndex].Selected = true;
}
private void DataGridView1_CellMouseDown(object sender, DataGridViewCellMouseEventArgs e)
{
if (e.Button != MouseButtons.Left ||e.RowIndex < 0 ) return;
BeginingRowIndex = e.RowIndex;
BeginingRow = DataGridView1.Rows[BeginingRowIndex];
BeginingRow.DefaultCellStyle = DataGridView1.Rows[BeginingRowIndex].DefaultCellStyle;
}
答案 6 :(得分：0)
private void butUp_Click(object sender, EventArgs e)
{
DataTable dtTemp = gridView.DataSource as DataTable;
object[] arr = dtTemp.Rows[0].ItemArray;
for (int i = 1; i < dtTemp.Rows.Count; i++)
{
dtTemp.Rows[i - 1].ItemArray = dtTemp.Rows[i].ItemArray;
}
dtTemp.Rows[dtTemp.Rows.Count - 1].ItemArray = arr;
}
private void butDown_Click(object sender, EventArgs e)
{
DataTable dtTemp = gridView.DataSource as DataTable;
object[] arr = dtTemp.Rows[dtTemp.Rows.Count - 1].ItemArray;
for (int i = dtTemp.Rows.Count - 2; i >= 0; i--)
{
dtTemp.Rows[i + 1].ItemArray = dtTemp.Rows[i].ItemArray;
}
dtTemp.Rows[0].ItemArray = arr;
}
答案 7 :(得分：0)
这是我找到问题的最短解决方案，我只是重构了一点代码：
http://dotnetspeaks.net/post/Moving-GridView-Rows-Up-Down-in-a-GridView-Control.aspx
<body>
<form id="form1" runat="server">
<asp:GridView ID="GridView1" Font-Names="Verdana" Font-Size="9pt" runat="server" OnRowCreated="GridView1_RowCreated"
AutoGenerateColumns="False" CellPadding="4" BorderColor="#507CD1" BorderStyle="Solid">
<Columns>
<asp:TemplateField HeaderText="First Name">
<ItemTemplate>
<asp:Label ID="txtFirstName" runat="server" Text='<%# Eval("FirstName") %>' />
</ItemTemplate>
</asp:TemplateField>
</Columns>
<HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
<AlternatingRowStyle BackColor="White" />
</asp:GridView>
<asp:Button ID="btnUp" runat="server" Text="Up" OnClick="btnUp_Click"/>
<asp:Button ID="btnDown" runat="server" Text="Down" OnClick="btnDown_Click" />
</form>
并且代码背后......
public int SelectedRowIndex { get; set; }
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
//Test Records
GridView1.DataSource = Enumerable.Range(1, 5).Select(a => new
{
FirstName = String.Format("First Name {0}", a),
LastName = String.Format("Last Name {0}", a),
});
GridView1.DataBind();
}
}
protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
e.Row.Attributes["onmouseover"] = "this.style.cursor='pointer'";
e.Row.ToolTip = "Click to select row";
e.Row.Attributes["onclick"] = Page.ClientScript.GetPostBackClientHyperlink(GridView1, "Select$" + e.Row.RowIndex);
}
}
protected void btnUp_Click(object sender, EventArgs e)
{
var rows = GridView1.Rows.Cast<GridViewRow>().Where(a => a != GridView1.SelectedRow).ToList();
//If First Item, insert at end (rotating positions)
if (GridView1.SelectedRow.RowIndex.Equals(0))
{
rows.Add(GridView1.SelectedRow);
SelectedRowIndex = GridView1.Rows.Count -1;
}
else
{
SelectedRowIndex = GridView1.SelectedRow.RowIndex - 1;
rows.Insert(GridView1.SelectedRow.RowIndex - 1, GridView1.SelectedRow);
}
RebindGrid(rows);
}
protected void btnDown_Click(object sender, EventArgs e)
{
var rows = GridView1.Rows.Cast<GridViewRow>().Where(a => a != GridView1.SelectedRow).ToList();
//If Last Item, insert at beginning (rotating positions)
if (GridView1.SelectedRow.RowIndex.Equals(GridView1.Rows.Count - 1))
{
rows.Insert(0, GridView1.SelectedRow);
SelectedRowIndex = 0;
}
else
{
SelectedRowIndex = GridView1.SelectedRow.RowIndex + 1;
rows.Insert(GridView1.SelectedRow.RowIndex + 1, GridView1.SelectedRow);
}
RebindGrid(rows);
}
private void RebindGrid(IEnumerable<GridViewRow> rows)
{
GridView1.DataSource = rows.Select(a => new
{
FirstName = ((Label)a.FindControl("txtFirstName")).Text,
}).ToList();
GridView1.SelectedIndex = SelectedRowIndex;
GridView1.DataBind();
}
答案 8 :(得分：0)
private void buttonX8_Click（object sender，EventArgs e）// down { DataGridViewX grid = dataGridViewX1; 尝试 { int totalRows = grid.Rows.Count; int idx = grid.SelectedCells [0] .OwningRow.Index; if（idx == totalRows - 1） 返回; int col = grid.SelectedCells [0] .OwningColumn.Index; DataGridViewRowCollection rows = grid.Rows; DataGridViewRow row = rows [idx]; rows.Remove（行）; rows.Insert（idx + 1，row）; grid.ClearSelection（）; grid.Rows [idx + 1] .Cells [col] .Selected = true;
private void buttonX8_Click(object sender, EventArgs e)//down
{
DataGridViewX grid = dataGridViewX1;
try
{
int totalRows = grid.Rows.Count;
int idx = grid.SelectedCells[0].OwningRow.Index;
if (idx == totalRows - 1 )
return;
int col = grid.SelectedCells[0].OwningColumn.Index;
DataGridViewRowCollection rows = grid.Rows;
DataGridViewRow row = rows[idx];
rows.Remove(row);
rows.Insert(idx + 1, row);
grid.ClearSelection();
grid.Rows[idx + 1].Cells[col].Selected = true;
}
catch { }
}
答案 9 :(得分：0)
具有多选支持的数据绑定解决方案，使用SharpDevelop 4.4转换为C＃。
<Extension()>
Sub MoveSelectionUp(dgv As DataGridView)
If dgv.CurrentCell Is Nothing Then Exit Sub
dgv.CurrentCell.OwningRow.Selected = True
Dim items = DirectCast(dgv.DataSource, BindingSource).List
Dim selectedIndices = dgv.SelectedRows.Cast(Of DataGridViewRow).Select(Function(row) row.Index).Sort
Dim indexAbove = selectedIndices(0) - 1
If indexAbove = -1 Then Exit Sub
Dim itemAbove = items(indexAbove)
items.RemoveAt(indexAbove)
Dim indexLastItem = selectedIndices(selectedIndices.Count - 1)
If indexLastItem = items.Count Then
items.Add(itemAbove)
Else
items.Insert(indexLastItem + 1, itemAbove)
End If
End Sub
<Extension()>
Sub MoveSelectionDown(dgv As DataGridView)
If dgv.CurrentCell Is Nothing Then Exit Sub
dgv.CurrentCell.OwningRow.Selected = True
Dim items = DirectCast(dgv.DataSource, BindingSource).List
Dim selectedIndices = dgv.SelectedRows.Cast(Of DataGridViewRow).Select(Function(row) row.Index).Sort
Dim indexBelow = selectedIndices(selectedIndices.Count - 1) + 1
If indexBelow >= items.Count Then Exit Sub
Dim itemBelow = items(indexBelow)
items.RemoveAt(indexBelow)
Dim indexAbove = selectedIndices(0) - 1
items.Insert(indexAbove + 1, itemBelow)
End Sub
答案 10 :(得分：0)
// Down
DataGridViewRow row = new DataGridViewRow();
int index = 0;
row = dgv.SelectedRows[0];
index = dgv.SelectedRows[0].Index;
dgv.Rows.Remove(dgv.SelectedRows[0]);
dgv.Rows.Insert(index + 1, row);
dgv.ClearSelection();
dgv.Rows[index + 1].Selected = true;
// Up
DataGridViewRow row = new DataGridViewRow();
int index = 0;
row = dgv.SelectedRows[0];
index = dgv.SelectedRows[0].Index;
dgv.Rows.Remove(dgv.SelectedRows[0]);
dgv.Rows.Insert(index-1, row);
dgv.ClearSelection();
dgv.Rows[index - 1].Selected = true;
其中 dgv 是您的 DataGridView。
答案 11 :(得分：-1)
试试这个：
private void buttonX9_Click(object sender, EventArgs e)//up
{
DataGridViewX grid = dataGridViewX1;
try
{
int totalRows = grid.Rows.Count;
int idx = grid.SelectedCells[0].OwningRow.Index;
if (idx == 0)
return;
int col = grid.SelectedCells[0].OwningColumn.Index;
DataGridViewRowCollection rows = grid.Rows;
DataGridViewRow row = rows[idx];
rows.Remove(row);
rows.Insert(idx - 1, row);
grid.ClearSelection();
grid.Rows[idx - 1].Cells[col].Selected = true;
}
catch { }
}