【发布时间】:2011-09-09 06:53:34
【问题描述】:
我有以下与 bindingSource 关联的 DataGridView:
bindingSource1.DataSource = dataset1;
bindingSource1.DataMember = "table1";
dataNavigator1.DataSource = bindingSource1;
dataGridView1.DataSource = bindingSource1;
我有两个函数可以上下移动选定的行:
private void buttonUp_Click(object sender, EventArgs e)
{
int index = this.bindingSource1.Position;
if (index > 0)
{
DataRow dr = (DataRow)this.dataset1["table1"].Rows[index];
DataRow newDr = this.dataset1["table1"].NewRow();
newDr.ItemArray = dr.ItemArray;
this.dataset1["table1"].Rows.RemoveAt(index);
this.dataset1["table1"].Rows.InsertAt(newDr, index - 1);
this.bindingSource1.Position = index - 1;
}
}
private void buttonDown_Click(object sender, EventArgs e)
{
int index = this.bindingSource1.Position;
if (index < this.bindingSource1.Count)
{
DataRow dr = (DataRow)this.dataset1["table1"].Rows[index];
DataRow newDr = this.dataset1["table1"].NewRow();
newDr.ItemArray = dr.ItemArray;
this.dataset1["table1"].Rows.RemoveAt(index);
this.dataset1["table1"].Rows.InsertAt(newDr, index + 1);
this.bindingSource1.Position = index + 1;
}
}
这两种方法工作正常,当我单击按钮移动行时,它会正确移动。
但是,如果我在之前单击一列以对其进行排序(单击标题)并尝试再次移动一行后,绑定源位置已移动,但 datagridview 中的行未移动。 我调试了这些功能,没有任何问题,这似乎只是一个 datagridview 可视化错误。 我试图在 dataGridView1_Sorted 处理的事件中扩展绑定源的排序,但仍然不起作用。 为什么对 datagridview 进行排序操作后行没有移动?
谢谢。 -亚历山德罗
我取得了一些进展,但通过单击标题网格列进行排序后仍然存在一些问题。我试图重置 bindingSource1.Sort = "";在移动行功能中,行和现在行被移动但位置错误!这里是代码,你自己试试吧..
public partial class Form1 : Form
{
DataTable dt;
DataSet ds = new DataSet();
public Form1()
{
InitializeComponent();
dt = new DataTable("table1");
dt.Columns.Add("Column1", typeof(int));
dt.Columns.Add("Column2", typeof(int));
dt.Columns.Add("Column3", typeof(int));
dt.Rows.Add(1, 0, 0);
dt.Rows.Add(2, 1, 1);
dt.Rows.Add(2, 0, 0);
dt.Rows.Add(3, 1, 1);
dt.Rows.Add(3, 0, 4);
dt.Rows.Add(3, 3, 4);
ds.Tables.Add(dt);
bindingSource1.DataSource = ds.Tables[0];
this.dataGridView1.DataSource = bindingSource1;
}
private void dataGridView1_Sorted(object sender, EventArgs e)
{
//force the BindingSource to reflect the same sort order as the DataGridView
String sort = dataGridView1.SortedColumn.DataPropertyName;
if (dataGridView1.SortOrder == SortOrder.Descending)
{
sort = sort + " DESC";
}
//ds.Tables["table1"].DefaultView.Sort = sort;
bindingSource1.Sort = sort;
}
private void button1_Click(object sender, EventArgs e)
{
bindingSource1.Sort = "";
//ds.Tables[0].DefaultView.Sort = "";
int index = this.bindingSource1.Position;
if (index > 0)
{
DataRow dr = (DataRow)this.ds.Tables["table1"].Rows[index];
DataRow newDr = this.ds.Tables["table1"].NewRow();
newDr.ItemArray = dr.ItemArray;
this.ds.Tables["table1"].Rows.RemoveAt(index);
this.ds.Tables["table1"].Rows.InsertAt(newDr, index - 1);
this.bindingSource1.Position = index - 1;
}
}
private void button2_Click(object sender, EventArgs e)
{
bindingSource1.Sort = "";
int index = this.bindingSource1.Position;
if (index < this.bindingSource1.Count)
{
DataRow dr = (DataRow)this.ds.Tables["table1"].Rows[index];
DataRow newDr = this.ds.Tables["table1"].NewRow();
newDr.ItemArray = dr.ItemArray;
this.ds.Tables["table1"].Rows.RemoveAt(index);
this.ds.Tables["table1"].Rows.InsertAt(newDr, index + 1);
this.bindingSource1.Position = index + 1;
}
}
}
【问题讨论】:
-
下次请至少花点时间自己删除所有多余的空行。
-
你的问题是什么?或者简短的回答:
Yes.
标签: c# data-binding sorting datagridview