从sql server生成时代。 VB.NET

Question

你能告诉我如何从0-5岁得等从SQL Server和输入文本框或标签总数是多少？请点击链接样本 Generate Ages

谢谢！

Answer 1

你的意思是这样

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` 

你的问题，但是，很可怜，通常人们不会把过多的精力投入到回答它，因为你已经把没有努力在自己身上。