如何导入所有的Excel表到数据集在C＃ [英] How to import all the Excel sheets to DataSet in C#

问题描述

我搜索互联网，这和能不能真正找到喜欢它的一个问题。每个人都在寻找一种方式来导入某个表中的Excel文件，但我想要的是把文件中的所有表导入到数据表的在数据集不知道工作表名称。

I've searched internet for this and couldn't really find a question like it. Everyone was looking for a way to import an individual sheet in the excel file but what I want is to import all the sheets in the file to DataTable's in DataSet without knowing the sheet names.

我没有做很多事情与Excel之前。这是一个样本和部分工作code，我在互联网上找到，它只是分析给定表名称：

I've not done much things with Excel before. This a sample and partially working code I've found on the internet and it only parses the given sheet name:

public static DataSet Parse(string fileName, string workSheetName)
{
    string connectionString = string.Format("provider=Microsoft.Jet.OLEDB.4.0; data source={0};Extended Properties=Excel 8.0;", fileName);
    string query = string.Format("SELECT * FROM [{0}$]", workSheetName);

    DataSet data = new DataSet();
    using (OleDbConnection con = new OleDbConnection(connectionString))
    {
        con.Open();
        OleDbDataAdapter adapter = new OleDbDataAdapter(query, con);
        adapter.Fill(data);
    }

    return data;
}

在code以上，如你所见，workSheetName应该在这样的查询可以通过知道去哪里找的到进口。就我而言，我希望它遍历所有的表，无论他们被命名为喜欢和它们导入到单个数据表是一个数据集<的/ code>。

In the code above, as you see, workSheetName should be passed in so the query can know where to look at to import. In my case, I want it to traverse all the sheets no matter what they are named like and import them to individual DataTable's of a DataSet.

因此​​，在本质上，最后一件事将是一个数据集，其中每个数据表持有的行中的每个片导入的文件。

So in essence, the final thing will be a DataSet in which each DataTable holds rows for each sheet in the imported file.

推荐答案

这是一个code我想出了和它的作品完美，但我看到别人已经添加了一个答案：

This is a code I came up with and it works perfect but I saw someone else already added an answer:

static DataSet Parse(string fileName)
{
    string connectionString = string.Format("provider=Microsoft.Jet.OLEDB.4.0; data source={0};Extended Properties=Excel 8.0;", fileName);


    DataSet data = new DataSet();

    foreach(var sheetName in GetExcelSheetNames(connectionString))
    {
        using (OleDbConnection con = new OleDbConnection(connectionString))
        {    
            var dataTable = new DataTable();
            string query = string.Format("SELECT * FROM [{0}]", sheetName);
            con.Open();
            OleDbDataAdapter adapter = new OleDbDataAdapter(query, con);
            adapter.Fill(dataTable);
            data.Tables.Add(dataTable);
        }
    }

    return data;
}

static string[] GetExcelSheetNames(string connectionString)
{
        OleDbConnection con = null;
        DataTable dt = null;
        con= new OleDbConnection(connectionString);
        con.Open();
        dt = con.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);

        if (dt == null)
        {
            return null;
        }

        String[] excelSheetNames = new String[dt.Rows.Count];
        int i = 0;

        foreach (DataRow row in dt.Rows)
        {
            excelSheetNames[i] = row["TABLE_NAME"].ToString();
            i++;
        }

        return excelSheetNames;
}

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