将项目从复选框列表传递到SQL Server表 [英] Pass items from checkboxlist to SQL Server table

问题描述

我正在尝试从复选框列表中提取项目并将其添加到SQL Server表中。我认为这就像遍历每个项目然后将其插入表一样简单，但是我收到了一个未处理的异常，其代码如下：

I'm trying to take items from a checkboxlist and add them to a SQL Server table. I assumed it would be as easy as looping through each item and then inserting it into the table, but I'm getting an unhandled exception with the following code:

using (SqlConnection connection = new SqlConnection(connectionString))
{
     for (int i = 0; i <= UPCList.Items.Count; i++)
     {
         string finalSubmit =
              "INSERT INTO Boxes (BoxNumber)"
              + "VALUES @selected";

          SqlCommand command = new SqlCommand(finalSubmit, connection);
          command.Parameters.AddWithValue("@selected", i);
          command.Connection.Open();
          command.ExecuteNonQuery();
          command.Connection.Close();
      }
 }

编辑：以下建议之一可行，但建议输入项目ID，而不是列表项目本身的值。如何将列表中每个项目的值插入SQL表？

one of the suggestions below worked, but it's putting in the ID of the item rather than the value of the list item itself. How can I insert the value for each item in the list into the SQL table?

推荐答案

放入值放在括号中：

"INSERT INTO Boxes (BoxNumber) VALUES (@selected)";

此外，我认为您必须替换

Also, i assume you have to replace

for (int i = 0; i <= UPCList.Items.Count; i++)

with

for (int i = 0; i < UPCList.Items.Count; i++)

，您可能想插入项目的文本而不是索引：

and you might want to insert the item's text instead of the index:

command.Parameters.AddWithValue("@selected", listBox.Items[i].ToString());

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