[英]Catch data from DataTable in c#
SqlCommand detailsCommand = new SqlCommand("SELECT bd.bookName, bd.authorName, bd.publishDate bc.description, bd.keyWords FROM bookCart as bc, bookDetails as bd WHERE bc.bookCode = bd.code");
DataTable detailsTable = book.showData(detailsCommand);
String BookName = detailsTable.Rows[0]["bookName"].ToString();
String AuthorName = detailsTable.Rows[1]["authorName"].ToString();
String PublishDate = detailsTable.Rows[2]["publishDate"].ToString();
String Describe = detailsTable.Rows[3]["describtion"].ToString();
String KeyWords = detailsTable.Rows[4]["keyWords"].ToString();
它在最后两行给了我一个IndexOutOfRangeException
。
我想这是因为描述在另一个表中,但我无法解决它,你能帮我解决这个问题吗?
接下来试试:
String BookName = detailsTable.Rows[0]["bookName"].ToString();
String AuthorName = detailsTable.Rows[0]["authorName"].ToString();
String PublishDate = detailsTable.Rows[0]["publishDate"].ToString();
String Describe = detailsTable.Rows[0]["description"].ToString();
String KeyWords = detailsTable.Rows[0]["keyWords"].ToString();
DataTable.Rows
包含属于该表的行的集合,因此detailsTable.Rows[0]
是第一行, detailsTable.Rows[1]
是第二行,依此类推(在您的情况下,它们似乎有 3 个,所以你在第 4 个得到IndexOutOfRangeException
)
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