Question

我正在尝试将数据网格视图行添加到sql表中，但this error正在显示，但实际数据已保存：

参数化查询'（@ Name1 nvarchar（4000），@ Dad nvarchar（4000），@ Gender nvarchar（4000'需要参数'@ Name1'，没有提供。

我做了很多研究，有人说添加dbNull值并没有发生任何事情。我也阅读了MSN文档，但还不够了解。

cmd.CommandText = "Insert into Member values('" & txt_fserial_no.Text & "',@Name1,@DOB,@Gender,@Dad,@Relation,@NRC,@Citizen,@Job,@Race,@Country,@Religion)"
cmd.CommandType = CommandType.Text
' Dim adapFam As New SqlDataAdapter'
cmd.Parameters.Add("@Name1", SqlDbType.VarChar)
cmd.Parameters.Add("@Dad", SqlDbType.VarChar)
cmd.Parameters.Add("@Gender", SqlDbType.VarChar)
cmd.Parameters.Add("@DOB", SqlDbType.Date)
cmd.Parameters.Add("@Job", SqlDbType.VarChar)
cmd.Parameters.Add("@Race", SqlDbType.VarChar)

cmd.Parameters.Add("@Country", SqlDbType.VarChar)
cmd.Parameters.Add("@Religion", SqlDbType.VarChar)
cmd.Parameters.Add("@Relation", SqlDbType.VarChar)
cmd.Parameters.Add("@Citizen", SqlDbType.VarChar)
cmd.Parameters.Add("@NRC", SqlDbType.VarChar)

For i As Integer = 0 To datagrid_preview.Rows.Count - 1
    cmd.Parameters.Clear()
    cmd.Parameters.AddWithValue("@Name1", datagrid_preview.Rows(i).Cells(0).Value)
    cmd.Parameters.AddWithValue("@Dad", datagrid_preview.Rows(i).Cells(1).Value)
    cmd.Parameters.AddWithValue("@Gender", datagrid_preview.Rows(i).Cells(2).Value)
    cmd.Parameters.AddWithValue("@DOB", datagrid_preview.Rows(i).Cells(3).Value)
    cmd.Parameters.AddWithValue("@Job", datagrid_preview.Rows(i).Cells(4).Value)
    cmd.Parameters.AddWithValue("@Race", datagrid_preview.Rows(i).Cells(5).Value)
    cmd.Parameters.AddWithValue("@Country", datagrid_preview.Rows(i).Cells(6).Value)
    cmd.Parameters.AddWithValue("@Religion", datagrid_preview.Rows(i).Cells(7).Value)
    cmd.Parameters.AddWithValue("@Relation", datagrid_preview.Rows(i).Cells(8).Value)
    cmd.Parameters.AddWithValue("@Citizen", datagrid_preview.Rows(i).Cells(9).Value)
    cmd.Parameters.AddWithValue("@NRC", datagrid_preview.Rows(i).Cells(10).Value)

    cmd.Connection = conn
    cmd.ExecuteNonQuery()

    'adapFam.InsertCommand.ExecuteNonQuery()'

Next
conn.Close()`][1]

Answer 1

我认为这应该有效：

cmd.CommandText = "Insert into Member(id,Name1,Dad,Gender,DOB,Job,Race,Country,Religion,Relation,Citizen,NRC) values(@id,@Name1,@DOB,@Gender,@Dad,@Relation,@NRC,@Citizen,@Job,@Race,@Country,@Religion)"
cmd.CommandType = CommandType.Text
cmd.Connection = conn

For i As Integer = 0 To datagrid_preview.Rows.Count - 1
    cmd.Parameters.Clear()
    cmd.Parameters.AddWithValue("@id", txt_fserial_no.Text)
    cmd.Parameters.AddWithValue("@Name1", datagrid_preview.Rows(i).Cells(0).Value)
    cmd.Parameters.AddWithValue("@Dad", datagrid_preview.Rows(i).Cells(1).Value)
    cmd.Parameters.AddWithValue("@Gender", datagrid_preview.Rows(i).Cells(2).Value)
    cmd.Parameters.AddWithValue("@DOB", datagrid_preview.Rows(i).Cells(3).Value)
    cmd.Parameters.AddWithValue("@Job", datagrid_preview.Rows(i).Cells(4).Value)
    cmd.Parameters.AddWithValue("@Race", datagrid_preview.Rows(i).Cells(5).Value)
    cmd.Parameters.AddWithValue("@Country", datagrid_preview.Rows(i).Cells(6).Value)
    cmd.Parameters.AddWithValue("@Religion", datagrid_preview.Rows(i).Cells(7).Value)
    cmd.Parameters.AddWithValue("@Relation", datagrid_preview.Rows(i).Cells(8).Value)
    cmd.Parameters.AddWithValue("@Citizen", datagrid_preview.Rows(i).Cells(9).Value)
    cmd.Parameters.AddWithValue("@NRC", datagrid_preview.Rows(i).Cells(10).Value)

    cmd.ExecuteNonQuery()

Next

Answer 2

将datatable定义为global，用于将gridview raw插入到SQL Server表中，同样是用户绑定gridview。

将dt直接传递给SQL Server存储过程。

在SQL Server中创建一个函数：

CREATE PROCEDURE [dbo].[Insert_xyz]
      @tblxyz xyzType READONLY
AS
BEGIN
      SET NOCOUNT ON;

      INSERT INTO xyz(Id, Name, Country)
          SELECT Id, Name, Country 
          FROM @tblxyz
END

这是VB的代码：

If dt.Rows.Count > 0 Then
        Dim cons As String = ConfigurationManager.ConnectionStrings("xyz").ConnectionString
        Using con As New SqlConnection(cons)
            Using cmd As New SqlCommand("Insert_xyz")
                cmd.CommandType = CommandType.StoredProcedure
                cmd.Connection = con
                cmd.Parameters.AddWithValue("@tblxyz", dt)
                con.Open()
                cmd.ExecuteNonQuery()
                con.Close()
            End Using
        End Using
    End If

抱歉我的英语不好:)我尽力解释你。：）

将数据网格视图行添加到vb.net中的sql表

2 个答案: