我有一个列表视图,我需要将行和列加载到数据表中。
我尝试如下
DataTable dt = new DataTable();
foreach (ListViewItem item in listView1.Items)
{
table.Columns.Add(item.ToString());
foreach (var it in item.SubItems)
dt.Rows.Add(it.ToString());
}
[检索行数和列数时,将行数作为列数,将列数作为行数
不知道怎么回事。请帮我最好的祝福Bunzitop
很久以前,但是将来有人可能会为此而挣扎,因此,这是将ListView转换为DataTable的解决方案:
DataTable dtZeitplan = new DataTable();
foreach (ColumnHeader chZeitplan in lvZeitplan.Columns)
{
dtZeitplan.Columns.Add(chZeitplan.Text);
}
foreach (ListViewItem item in lvZeitplan.Items)
{
DataRow row = dtZeitplan.NewRow();
for(int i = 0; i < item.SubItems.Count; i++)
{
row[i] = item.SubItems[i].Text;
}
dtZeitplan.Rows.Add(row);
}
您做错了。您需要1 + listView1.Items[0].SubItems.Count
中的DataTable
列(1代表ListViewItem,其他代表子项)和listView1.Items.Count
行数。因此,您的代码应如下所示:
if (listView1.Items.Count > 0)
{
dt.Columns.Add();
foreach (ListViewItem.ListViewSubItem lvsi in listView1.Items[0].SubItems)
dt.Columns.Add();
//now we have all the columns that we need, let's add rows
foreach (ListViewItem item in listView1.Items)
{
List<string> row = new List<string>();
row.Add(item.ToString());
foreach (var it in item.SubItems)
row.Add(it.ToString());
//Add the row into the DataTable
dt.Rows.Add(row.ToArray());
}
}
DataTable table = new DataTable();
table.Columns.Add("MODUL", typeof(string));
table.Columns.Add("ACIKLAMA", typeof(string));
table.Columns.Add("UZUNLUK", typeof(string));
table.Columns.Add("GENISLIK", typeof(string));
table.Columns.Add("MIKTAR", typeof(string));
for (int i = 0; i < listView2.Items.Count; i++)
{
table.Rows.Add(listView2.Items[i].SubItems[1].Text, listView2.Items[i].SubItems[2].Text, listView2.Items[i].SubItems[3].Text, listView2.Items[i].SubItems[4].Text, listView2.Items[i].SubItems[5].Text);
}
您可以使用ItemsSource属性和System.Data类(ADO.Net)将列表视图绑定到数据表和Vise-verse(所需的)。以下代码将为您提供来自现有绑定ListView控件的数据表。
DataView theDataView = (DataView)theListView.ItemsSource;
DataTable theDataTable = theDataView.Table;
Manish Mishra问您的listview控件绑定到什么。这个问题问得好。我的回答假设它已经绑定到数据表。
VB.Net的工作代码:只需将列表视图名称替换为“ LVActions”
Dim it As Integer = 0
Dim dt As New DataTable
For it = 0 To LVActions.Items(0).SubItems.Count - 1
Dim DCOL As New DataColumn(LVActions.Columns(it).Text)
dt.Columns.Add(DCOL)
Next
For it = 0 To LVActions.Items.Count - 1
Dim DROW As DataRow = dt.NewRow
For j As Integer = 0 To LVActions.Items(it).SubItems.Count - 1
DROW(LVActions.Columns(j).Text) = LVActions.Items(it).SubItems(j).Text
Next
dt.Rows.Add(DROW)
Next