添加記錄到表使用VB.Net使用SQLParameters

Question

這是添加記錄用vb.net SQL表的一個非常簡單的任務，但我掙扎。

Dim query As String = String.Empty 

query &= "INSERT INTO StudentInfo(StudentName,StudentPhone) VALUES(@param1,@param2)" 

Using conn As New SqlConnection("csStudentDB") 
    Using comm As New SqlCommand() 
     With comm 
      .Connection = conn 
      .CommandType = CommandType.Text 
      .CommandText = query 
      .Parameters.AddWithValue("@StudentName", txtStudentName.Text) 
      .Parameters.AddWithValue("@StudentPhone", txtStudentPhone.Text) 
     End With 
     Try 
      conn.Open() 
      comm.ExecuteNonQuery() 
     Catch ex As Exception 

     End Try 
    End Using 
End Using 

Web.config文件：

<connectionStrings> 
    <add name="csStudentDB" connectionString="Data Source=xxxxx;Initial Catalog=xxxxx;Integrated Security=True" 
     providerName="System.Data.SqlClient" /> 
    </connectionStrings> 

我想將記錄添加到我的桌子，但我得到的錯誤的錯誤在Using conn As New SqlConnection(....."

「的格式是發生初始化字符串不符合從索引0開始的規範 。「

的任何解決方案，將不勝感激。

Answer 1

試試這個：

With comm 
     .Connection = conn 
     .CommandType = CommandType.Text 
     .CommandText = query 
     .Parameters.AddWithValue("@param1", txtStudentName.Text) 
     .Parameters.AddWithValue("@param2", txtStudentPhone.Text) 
    End With 

因爲在查詢

query &= "INSERT INTO StudentInfo(StudentName,StudentPhone) VALUES(@param1,@param2)" 

你指定參數爲@param1和@param2，所以你必須使用samme在.Parameters.AddWithValue

Answer 2

在你的INSERT語句您正在使用參數@ param1和@ param2。但是在你的代碼中你正在使用@StudentName和@StudentPhone。他們需要是一樣的。

另外，我還添加了位檢索連接字符串。 例如：

Dim connString As String = String.Empty 

    connString = System.Configuration.ConfigurationManager 
.ConnectionStrings("csStudentDB").ConnectionString 

    Dim query As String = String.Empty 

query = "INSERT INTO StudentInfo(StudentName,StudentPhone) VALUES(@StudentName,@StudentPhone)" 

Using conn As New SqlConnection(connString) 
    Using comm As New SqlCommand() 
     With comm 
      .Connection = conn 
      .CommandType = CommandType.Text 
      .CommandText = query 
      .Parameters.AddWithValue("@StudentName", txtStudentName.Text) 
      .Parameters.AddWithValue("@StudentPhone", txtStudentPhone.Text) 
     End With 
     Try 
      conn.Open() 
      comm.ExecuteNonQuery() 
     Catch ex As Exception 

     End Try 
    End Using 
End Using 

Answer 3

如果一切都失敗了，試試這個：[？我們能否停止使用AddWithValue（）已經]

Using conn As New SqlConnection("Data Source=YourDBServerName;Initial Catalog=YourDBName;Integrated Security=True") 
    Using comm As New SqlCommand() 
     With comm 
      .Connection = conn 
      .CommandType = CommandType.Text 
      .CommandText = query 
      .Parameters.AddWithValue("@StudentName", txtStudentName.Text) 
      .Parameters.AddWithValue("@StudentPhone", txtStudentPhone.Text) 
     End With 
     Try 
      conn.Open() 
      comm.ExecuteNonQuery() 
     Catch ex As Exception 

     End Try 
    End Using 
End Using