[英]How do I check two textboxes for two dates
One has txtDateReceived and second has txtVendorPackDate. 一个具有txtDateReceived,第二个具有txtVendorPackDate。 Before insert will add record I have to check if txtDateReceived is not erlier then txtVendorPackDate. 在插入将添加记录之前,我必须检查txtDateReceived是否正确,然后检查txtVendorPackDate。 I try use TextChanged event. 我尝试使用TextChanged事件。
protected void txtVendorPackDate_TextChanged(object sender, EventArgs e)
{
DateTime fromDate = DateTime.MinValue;
DateTime toDate = DateTime.MaxValue;
bool parseResultMin = DateTime.TryParse(txtVendorPackDate.Text, out fromDate);
bool parseResultMax = DateTime.TryParse(txtDateReceived.Text, out toDate);
if (toDate < fromDate)
{
txtVendorPackDate.Text = "";
lblDateExpired.Visible = true;
lblDateExpired.Text = "Selected date is incorrect, please enter correct data.";
txtVendorFatPerc.Focus();
}
double expired = toDate.Subtract(fromDate).TotalDays;
if (expired >= 60)
{
lblDateExpired.Text = "Date Expired " + expired + " days after pack day!!!"
lblDateExpired.Visible = true;
}
}
How I could do it from client side not using controls validation. 我如何从客户端不使用控件验证来做到这一点。
Try this 尝试这个
if (!parseResultMin || !parseResultMax || toDate < fromDate)
In your code, if both dates are invalid, toDate
and fromDate
will both be DateTime.MinValue
, so the expression toDate < fromDate
won't be true. 在您的代码中,如果两个日期均无效,则toDate
和fromDate
都将为DateTime.MinValue
,因此表达式toDate < fromDate
不会为true。
You can use a CompareValidator control to check that the vendor pack date is less than the received date. 您可以使用CompareValidator控件来检查供应商包装日期是否少于收到的日期。 If both fields are required, you can also use the RequiredFieldValidator. 如果两个字段都是必需的,则还可以使用RequiredFieldValidator。 I would employ a combination of RequiredFieldValidators and CompareValidators. 我将使用RequiredFieldValidators和CompareValidators的组合。
One RequiredFieldValidator for each textbox to make sure the user enters a value. 每个文本框都有一个RequiredFieldValidator,以确保用户输入一个值。 One CompareValidator for each textbox to make sure the value entered is a date type. 每个文本框都有一个CompareValidator,以确保输入的值是日期类型。 One CompareValidator to make sure the vendor pack date is earlier than the received date. 一个CompareValidator来确保供应商装箱日期早于收到日期。
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