VB.NET不同格式的日期插入到SQL Server

Question

I want to insert data into SQL Server, but I have different format in datagridview data from is "dd/mm/yyyy" and after I see in my SQL Server format is "yyyy/mm/dd" that why I can't use where for update data.

In my SQL Server, the datatype is Date , and in my insert query

 cmd.Parameters.AddWithValue("@Date", Convert.ToDateTime(row.Cells("Date").Value))

vb format , sql format

Answer 1

Format is irrelevant. Format is only an issue when converting a DateTime to a String for display or when converting text input to a DateTime . You should be storing binary dates in your database and binary dates are just numbers and have no format. You should also be storing binary DateTime values in your grid. How the grid displays them is irrelevant to how they're stored.

Here's what you should be doing. Create a DataTable with a column for DateTime values, not String values. You might do that manually or let a data adapter do it for you when you call Fill . Bind that DataTable to your grid and configure the grid column to display the dates however is appropriate for the application. Save any and all changes made to the grid by calling Update on the same data adapter. You can use a command builder to generate the action commands or you can create them yourself. Either way, you don't populate the parameters yourself but the data adapter draws the values from the DataTable . If you're creating the commands manually, creating a parameter would look something like this:

myDataAdapter.InsertCommand.Parameters.Add("@Date", SqlDbType.Date, 0, "Date")

That tells the data adapter to get the values for the "@Date" parameter from the "Date" column of the DataTable .