從sql server生成時代。 VB.NET

Question

你能告訴我如何從0-5歲得等從SQL Server和輸入文本框或標籤總數是多少？請點擊鏈接樣本 Generate Ages

謝謝！

Answer 1

你的意思是這樣

Dim sql As String = "SELECT age_column FROM your_table WHERE age_column BETWEEN '0' AND '5'" 
'The above line selects the all records where age is between 0-5 (Change the variables) 

Dim da As New OleDbDataAdapter(sql, connectionstring) 
Dim ds As New DataSet 
Dim dt as new DataTable 

da.Fill(ds) 
dt = ds.Tables(0).Copy() 

' Above code stores the results in an iterable table 

Dim i As Integer = 0 

For Each dr as DataRow in dt.Rows 
i = i + 1 
Next 

TextBox1.Text = i 

'i will be the total number of records where age is between 0-5, and display it in a `TextBox` 

你的問題，但是，很可憐，通常人們不會把過多的精力投入到回答它，因爲你已經把沒有努力在自己身上。