VB.NET校验字符串函数

发布时间：2020-12-17 00:33:38 所属栏目：大数据来源：网络整理

导读：VB.NET校验字符串是否是日期 'Validate for a dateShared Function checkdate(ByVal thisvalue As String) As String If Not IsDate(thisvalue) Then checkdate = "NULL" Else checkdate = "'" "'" End If Return checkdateEnd Function ' END checkdate VB.

VB.NET校验字符串是否是日期

'Validate for a date
Shared Function checkdate(ByVal thisvalue As String) As String
  If Not IsDate(thisvalue) Then
    checkdate = "NULL"
  Else
    checkdate = "'" & thisvalue & "'"
  End If
  Return checkdate
End Function ' END checkdate

VB.NET检查字符串是否是数字

'~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
'Used to submit values to the database,check for empty value,replace w/ "NULL"
'~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
Shared Function checkNumber(ByVal thisvalue As String) As String
  If IsDBNull(thisvalue) Or Len(thisvalue) = 0 Or Not IsNumeric(thisvalue) Then
    checkNumber = "NULL"
  Else
    checkNumber = thisvalue
  End If
  Return checkNumber
End Function ' END checkNumber

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