How would I update a row? (Excel oledb)

Question

The following code writes a new row (with columns that have headers):
    MyConnection = new System.Data.OleDb.OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + "C:\\__\\test.xls" + ";Extended Properties='Excel 12.0 Xml;HDR=YES;'");
    MyConnection.Open();
    myCommand.Connection = MyConnection;
    string stSheetName = "Sheet1";
    string sql = "INSERT INTO [" + stSheetName + "$] (id,name) VALUES('22','a')";
How would I update row 5?
bhs67
bhs67

Answer 1

Modify the connection string (HRD=NO) and use the UPDATE command that I showed you in your previous thread:
https://social.msdn.microsoft.com/Forums/vstudio/en-US/02f295e2-4069-47f2-b5c6-4f4a3480f9dc/how-do-i-write-to-specific-cells-in-excel-c-oledb?forum=csharpgeneral#06ac87e1-3315-42d4-9ced-4f534f7dc811
Or you could update a name by an id like this:
string sql = "UPDATE["+stSheetName+"$] SET name = 'www' where id = '5'";
System.Data.OleDb.OleDbCommand myCommand = new System.Data.OleDb.OleDbCommand();
System.Data.OleDb.OleDbConnection MyConnection = new System.Data.OleDb.OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + "C:\\__\\test.xls" + ";Extended Properties='Excel 12.0 Xml;HDR=YES;'");
MyConnection.Open();
myCommand.Connection = MyConnection;
string stSheetName = "Sheet1";
new System.Data.OleDb.OleDbCommand("Insert into [" + stSheetName + "$] (id,name) values('1','a')", MyConnection).ExecuteNonQuery();
new System.Data.OleDb.OleDbCommand("Insert into [" + stSheetName + "$] (id,name) values('2','b')", MyConnection).ExecuteNonQuery();
new System.Data.OleDb.OleDbCommand("Insert into [" + stSheetName + "$] (id,name) values('3','c')", MyConnection).ExecuteNonQuery();
new System.Data.OleDb.OleDbCommand("Insert into [" + stSheetName + "$] (id,name) values('4','d')", MyConnection).ExecuteNonQuery();
new System.Data.OleDb.OleDbCommand("Insert into [" + stSheetName + "$] (id,name) values('5','e')", MyConnection).ExecuteNonQuery();
string sql = "UPDATE["+stSheetName+"$] SET name = 'www' where id = '5'";
myCommand.CommandText = sql;
myCommand.CommandText = sql;
myCommand.ExecuteNonQuery();
MyConnection.Close();
Hope that helps.
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