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VB.NET DataGridView限制列只能输入数字问题

下面的代码限制了5个DataGridView第2列只能输入数字，但只要触发了限制，第1列也会被限制了，除了输入数字不能输入其他的，大神们帮看看哪里出问题了 If e.KeyChar <> Chr(8) And e.KeyChar <> Chr(13) And (e.KeyChar < Chr(48) Or e.KeyChar > Chr(57)) Then ...
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vb.net datagridview显示的数据导出到其他数据库

例：从test1.db中显示取数据在datagridview1上显示 ；现在要把datagridview1中显示的数据输出到test2.db中 ...
Visual Studio Magazine

How to Use .NET Objects to Tie an Application to a Database

Database connectivity gives desktop and Web applications much of their value. .NET developers have products and framework objects that can tie a front-end application to SQL Server, MySQL, Sybase, ...