InvalidArgument=“0”的值对于“index”无效。 参数名: index

Question

要实现的功能，单击listview1的任一行，listview2显示以listview1莫一列值为关键字的所有数据
private void lvwEquipmentInfo_SelectedIndexChanged(object sender, EventArgs e)
        {
DataRow[] rows = dt.Select("eq_codenum='" + this.lvwEquipmentInfo.SelectedItems[0].SubItems[1].Text.ToString() + "'"); //InvalidArgument=“0”的值对于“index”无效。 参数名: index
            for (int i = 0; i < rows.Length; i++)
            {
             .....
            }}

Answer 1

DataRow[] rows = dt.Select("eq_codenum='" + this.lvwEquipmentInfo.SelectedItems[0].Text + "'"); 
lvwEquipmentInfo几列

Answer 2

this.listView1.SelectedItems.Count > 0
加个判断

Answer 3

可能你的SeletedItems的长度为0，也有可能你的列为0

Answer 4

增加this.listView1.SelectedItems.Count > 0判断
看了数据值不是关键字，subitem[]项
再请教，this.listView1.SelectedItems.Count > 0加这个判断是为啥？

Answer 5

remove也没效果但也不抛异常。int a = ((DataGridViewComboBoxCell)dataGridView.Rows[e.RowIndex].Cells["deName"]).Items.Count;                  
                if (a > 0)
                {
                    for (int j = a-1; j >= 0; j--)
                    {
                        try
                        {
                            MessageBox.Show(a.ToString());
                            ((DataGridViewComboBoxCell)dataGridView.Rows[e.RowIndex].Cells["deName"]).Items.RemoveAt(j);
                        }
                        catch(Exception e1)
                        {
                            MessageBox.Show(e1.Message);
                        }
                    }
                }