列表框控件问题
问题描述：
Hai，
我有一个包含多选项选项的列表框。如果我想在sql中的特定列中插入这些值，则表示它不能正常工作。它显示在SQL列中出现错误System.Collections.Generic.List`1 [System.String]。请帮助解决此问题
Hai,
I have a listbox that contains multiselect options.Suppose if i want to insert those values in particular column in sql it is not working.It showing error"System.Collections.Generic.List`1[System.String]" in sql column.Please help to fix this issue
var selected = ListBox1.GetSelectedIndices().ToList();
var selectedValues = (from c in selected
select ListBox1.Items[c].Value).ToList();
SqlCommand cmd = new SqlCommand("insert into Catalog1(System)values('" + selectedValues + "')", con);
cmd.ExecuteNonQuery();
con.Close();
答
HI
试试这段代码...
HI
Try this code...
var selected = ListBox1.GetSelectedIndices().ToList();
var selectedValues = (from c in selected
select ListBox1.Items[c].Text).ToList();
foreach (string value in selectedValues)
{
con.Open();
SqlCommand cmd = new SqlCommand("insert into Catalog1(System)values('" + value + "')", con);
cmd.ExecuteNonQuery();
con.Close();
}