关于ListBox的几个问题
时间：2014-11-05 14:25:03
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Winfrom ListBox绑定数据源list界面不更新问题与绑定数据源不可CRUD问题
场景：获取一个listbox的选中项添加到另一个listbox中
解决方案-1：不要直接绑定DataSource 先把ListBox绑定到BindingSource bs中在绑定bs即可
代码案例：
1-1：可更新全部添加
private void btnAdd_Click(object sender, EventArgs e) { ListBox.SelectedObjectCollection selectObj = this.listLeft.SelectedItems; foreach (DataRowView item in selectObj) { Sta sta = new Sta(); sta.STCD = int.Parse(item.Row.ItemArray[0].ToString()); sta.Name = item.Row.ItemArray[1].ToString(); list.Add(sta); } BindingSource bs = new BindingSource(); bs.DataSource = list; this.listRight.DataSource = bs; this.listRight.DisplayMember = "NAME"; this.listRight.ValueMember = "STCD"; }
1-2:更改后的 去掉重复项添加
private void btnAdd_Click(object sender, EventArgs e) { ListBox.SelectedObjectCollection selectObj = this.listLeft.SelectedItems; foreach (DataRowView item in selectObj) { bool b = true; //要查看listright是否已经有了这一项，有就不添加 foreach (Model.Sta rightItem in this.listRight.Items) { if (rightItem.Name == item.Row.ItemArray[1].ToString()) { b = false; } } if (b) { Sta sta = new Sta(); sta.STCD = int.Parse(item.Row.ItemArray[0].ToString()); sta.Name = item.Row.ItemArray[1].ToString(); list.Add(sta); } } BindingSource bs = new BindingSource(); bs.DataSource = list; this.listRight.DataSource = bs; this.listRight.DisplayMember = "NAME"; this.listRight.ValueMember = "STCD"; }
1-3: 妈蛋 设置 DataSource 属性后无法修改项集合 只能绑定到list集合了，不知道有没有好办法解决
····换成list还是不行，根本原因就是不能用datasource去绑定
只能直接添加item
1-4 最终版本 0.0
#region 添加右边listboxitems ListBox.SelectedObjectCollection selectObj = this.listLeft.SelectedItems; foreach (Model.Sta item in selectObj) { bool b = true; //要查看listright是否已经有了这一项，有就不添加 foreach (Model.Sta rightItem in this.listRight.Items) { if (rightItem.Name == item.Name) { b = false; } } if (b) { Sta sta = new Sta(); sta.STCD = item.STCD; sta.Name = item.Name; this.listRight.Items.Add(sta); } } this.listRight.DisplayMember = "NAME"; this.listRight.ValueMember = "STCD"; #endregion //删除左边已经添加的item //1-2:把选中的item移除 int icount = listLeft.SelectedItems.Count; for (int i = 0; i < icount; i++) { this.listLeft.Items.Remove(listLeft.SelectedItems[icount - 1 - i]); }
原文：http://www.cnblogs.com/fucker/p/4076151.html
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