FoxPro 命令到 VB.NET

Question

我正在 Visual Studio 2017 中运行 FoxPro 命令。 我要执行第二个命令文本先决条件到第一个，依此类推。有什么帮助吗？

Dim a = "Provider=VFPOLEDB.1;Data Source=C:\temp;Extended Properties=dBase IV"

Using cn As New OleDbConnection(a)
    cn.Open()

    Dim cmd As New OleDbCommand
    cmd.Connection = cn
    cmd.CommandText = "use C:\temp\products"
    cmd.ExecuteNonQuery()

    cmd.CommandText = "INDEX ON productid TAG productid"
    cmd.ExecuteNonQueryAsync()

    cmd.CommandText = "INDEX ON prodname TAG prodname"
    cmd.ExecuteNonQueryAsync()

    cn.Close()
End Using

Answer 1

您需要使用 Visual FoxPro ExecScript() 命令并且不要异步执行这些命令。

Dim a = "Provider=VFPOLEDB.1;Data Source=C:\temp;Extended Properties=dBase IV"

Using cn As New OleDbConnection(a)
    cn.Open()

    Dim cmd As New OleDbCommand
    cmd.Connection = cn
    cmd.CommandText = "execscript(['use C:\temp\products excl'])"
    cmd.ExecuteNonQuery()

    cmd.CommandText = "execscript(['INDEX ON productid TAG productid'])"
    cmd.ExecuteNonQuery()

    cmd.CommandText = "execscript(['INDEX ON prodname TAG prodname'])"
    cmd.ExecuteNonQuery()

    cn.Close()
End Using