如何使用C＃中安装的Excel外接程序创建Excel电子表格？

Question

I have created an excel spreadsheet using epplus library.

In this spreadsheet there are few columns with drop downs.

I need to make these drop downs searchable. We can make a drop down applied on a single cell, searchable using excel functions.

But it is not possible to apply the same on all the cells within a column.

But this is achievable using excel add-ins like 'excel campus-the-list-search-add-in' ( https://members.excelcampus.com/products/the-list-search-add-in/categories/142180/posts/422610 ).

I don't want each and every user to install the excel add-in when they are using the spreadsheet created from my application.

I want the add-in to be automatically added, when creating the spreadsheet from my .NET application using epplus library.

Answer 1

Your question is a bit confusing! maybe this can help you:

//Create the data set and table
DataSet ds = new DataSet("New_DataSet");
DataTable dt = new DataTable("New_DataTable");

//Set the locale for each
ds.Locale = System.Threading.Thread.CurrentThread.CurrentCulture;
dt.Locale = System.Threading.Thread.CurrentThread.CurrentCulture;

//Open a DB connection (in this example with OleDB)
OleDbConnection con = new OleDbConnection(dbConnectionString);
con.Open();

//Create a query and fill the data table with the data from the DB
string sql = "SELECT Whatever FROM MyDBTable;";
OleDbCommand cmd = new OleDbCommand(sql, con);
OleDbDataAdapter adptr = new OleDbDataAdapter();

adptr.SelectCommand = cmd;
adptr.Fill(dt);
con.Close();

//Add the table to the data set
ds.Tables.Add(dt);

//Here's the easy part. Create the Excel worksheet from the data set
ExcelLibrary.DataSetHelper.CreateWorkbook("MyExcelFile.xls", ds);