在服务器端代码中，我需要显示一条警报消息，并在满足特定条件时停止页面的执行。执行停止，但是我没有收到警报消息。我想念什么？我的代码是这样的。
Try
If txtAmtRequested.Text > Val(HiddenTotalFeeAmount.Value) Then
ScriptManager.RegisterClientScriptBlock(Me, GetType(Page), UniqueID,
"javascript:alert('Total Fee Amount set for this student is - '" & HiddenTotalFeeAmount.Value & "'... Enter Concession Amount lesser than this one..!')", True)
Exit Function
End If
Catch ex As Exception
End Try
尝试这个：
Try
If txtAmtRequested.Text > Val(HiddenTotalFeeAmount.Value) Then
ScriptManager.RegisterClientScriptBlock(Me, GetType(Page), UniqueID,
"javascript:alert('Total Fee Amount set for this student is - " & HiddenTotalFeeAmount.Value & "... Enter Concession Amount lesser than the..!');", True)
Exit Function
End If
Catch ex As Exception
End Try
您在插入值时在javascript中结束了字符串，导致此javascript：
javascript:alert('Total Fee Amount set for this student is - ' <Value> '... Enter Concession Amount lesser than the..!');
取而代之的是，您必须将值直接插入字符串中，或添加“ +”以连接字符串：
javascript:alert('Total Fee Amount set for this student is - <Value> ... Enter Concession Amount lesser than the..!');
要么
javascript:alert('Total Fee Amount set for this student is - ' + <Value> + '... Enter Concession Amount lesser than the..!');
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