从控制器中的excel导入数据时，如何检查excel文件中是否存在特定的列？

Question

I am adding data into my database table through a controller function that is adding the data successfully. The problem is that i have to add data from two different excel files that contain same columns except one column so while adding data i want to put some check in the controller while reading from excel file that whether a specific column exists in excel file or not? here is my controller method which is working fine for the rest of the columns:

using (ApplicationDbContext db = new ApplicationDbContext())
{
    db.Database.ExecuteSqlCommand("TRUNCATE TABLE COCoreMembers");
    DataAccess.DataTable abc = DataAccess.DataTable.New.ReadCsv(Server.MapPath("~/App_Data/TempBrdcepPSC/PscData/co_members.csv"));
    COCoreMember xyz = new COCoreMember();

    foreach (Row Row in abc.Rows)
    {
        xyz._URI = Row["_URI"];
        xyz._PARENT_AURI = Row["_PARENT_AURI"];
        xyz.HHID = Row["HHID"];
        xyz.HHNAME = Row["HHNAME"];
        xyz.HH_SET_ID = Row["HH_SET_ID"];
        xyz.HH_SET_NAME = Row["HH_SET_NAME"];
        xyz.MEM_ID = Row["MEM_ID"];
        xyz.MEM_NAME = Row["MEM_NAME"];
        xyz.MEMBER_AGE = Row["MEMBER_AGE"];
        xyz.POSITION = Row["POSITION"];
        xyz.CELL = Row["CELL"];
        if (Row["CNIC"].ToString() == xyz.CNIC)
        {
            xyz.CNIC = Row["CNIC"];
        }
        else
        {
            xyz.CNIC = "no record";
        }

        //xyz.CNIC = "CNIC";

        db.COCoreMembers.Add(xyz);
        db.SaveChanges();
    }
}

I just want to check that if column "CNIC" exists in the excel file then input that into table other wise input "No Record" into its place in the table.

Answer 1

Try like this-

using (ApplicationDbContext db = new ApplicationDbContext())
{
    db.Database.ExecuteSqlCommand("TRUNCATE TABLE COCoreMembers");
    DataAccess.DataTable abc = DataAccess.DataTable.New.ReadCsv(Server.MapPath("~/App_Data/TempBrdcepPSC/PscData/co_members.csv"));
    bool checkColumn = false;
    if(abc.Columns.Contains("CNIC"))
    {
        checkColumn = true;
    }
    else
    {
        abc.Columns.Add("CNIC");
    }

    COCoreMember xyz = new COCoreMember();

    foreach (Row Row in abc.Rows)
    {
        xyz._URI = Row["_URI"];
        xyz._PARENT_AURI = Row["_PARENT_AURI"];
        xyz.HHID = Row["HHID"];
        xyz.HHNAME = Row["HHNAME"];
        xyz.HH_SET_ID = Row["HH_SET_ID"];
        xyz.HH_SET_NAME = Row["HH_SET_NAME"];
        xyz.MEM_ID = Row["MEM_ID"];
        xyz.MEM_NAME = Row["MEM_NAME"];
        xyz.MEMBER_AGE = Row["MEMBER_AGE"];
        xyz.POSITION = Row["POSITION"];
        xyz.CELL = Row["CELL"];

        if(checkColumn)
        {
            xyz.CNIC = Row["CNIC"];
        }
        else
        {
            xyz.CNIC = "no record";
        }

        db.COCoreMembers.Add(xyz);
        db.SaveChanges();
    }
}