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我正在通过存储过程从MySQL表中读取数据来填充asp下拉列表。VB.NET下拉列表不包含所有项目
数据读取器返回表中的所有4行,但只有第2,3,4行列在下拉列表中。
这是设置下拉列表的代码。有没有人有任何想法可能会出错?
感谢
Try
Dim conn As New MySql.Data.MySqlClient.MySqlConnection(myConnectionString)
Dim cmd As New MySqlCommand()
conn.Open()
cmd.Connection = conn
cmd.CommandText = "Select_CatLibraryData"
cmd.CommandType = CommandType.StoredProcedure
Using catdata_rs As MySqlDataReader = cmd.ExecuteReader()
If catdata_rs.Read() Then
list_itemcategory.DataSource = catdata_rs
list_itemcategory.DataValueField = "category"
list_itemcategory.DataTextField = "category"
list_itemcategory.DataBind()
End If
End Using
Catch ex As MySql.Data.MySqlClient.MySqlException
lbl_ErrorPanelText.Text = "Error establishing a database connection!"
pn_ErrorPanel.Visible = True
End Try
使用SqlDataAdapter与DataSet或DataTable,而不是Reader。我认为这是更好的方法 – Khazratbek