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/// /// 验证是否为纯数字 /// /// /// public static bool IsNumeric(string str) { if (str == null || str.Length == 0) return fals... 阅读全文
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DataTable dt = (DataTable)dgv.DataSource; dt.Rows.Clear(); dgv.DataSource = dt; 阅读全文
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OpenFileDialog openFileDialog = new OpenFileDialog(); openFileDialog.Filter = "Microsoft Excel files(*.xls)|*.xls;*.xlsx";//过滤一下，只要表格格式的 openFileDialog.InitialDirectory = "c:\... 阅读全文