How To Validate A AJAX ComboBox With Empty Text
Dec 2, 2010How should i validate if my AJAX ComboBox contains text? I have tried with the ASP.NET RequiredFieldValidator but it dosent work.
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Ajax Combobox Not Firing Event When Combobox Is Empty
Jan 3, 2011in aspx i written as follows
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it binding correctly(datasource dynamically binded) and it raises event too while changing index but it is not raising event when we manually clearing the combobox text..if currently combobox having text "ASP" then i manually select that entire text and using del key i am deleting but it is not raising event for me.. when i change index it automatically raising event...i need to raise event while combobox is empty...
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View 2 RepliesHow To Validate Inserted Items In AJAX Combobox Against Database
Nov 30, 2010I wonder how to validate if a inserted item in a Combobox exists in a database during postback? If the item.text exists, a errormessage should notify the user that the item already exists in the database. If the item does not exists in the database a inserting should be done.
Should i use the customvalidator and create a servervalidationfunction that searches my databasetable for the item name?
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[Code]....
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http://flic.kr/p/8Uw29z
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Should I use Required Validator + Regex Validator at the same time?
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[Code]....
This is what my controller looks like.
[Code]....
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Jun 13, 2012I have a problem with CascadingDropDown... I have two related comboboxes, where the second is a slave of the first (e.g. country the first, cities the second). What I want is that if I select one country from combobox 1 then the second must be "filtered" by that selection (it should display all the cities inside the selected country, and the actual CascadingDropDown implementation is OK), but if I leave the combobox 1 in the default option (e.g. "Please select a country") I want the second to display all the cities I have in the database. The problem is that when selecting default option for combobox 1 the second combobox is disabled and a postback to my webservice never occurs.
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VS 2015 - ComboBox Click To Refresh Another ComboBox
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C# - How To Validate If The Input Text For Both Of Them Are Not Both Null
Apr 12, 2010I'm working on an ASP.NET/C# app.
I have 2 text boxes and I need to validate if the input text for both of them are not both null
ex:
if(string.IsNullOrEmpty(TextBox1.Text) && string.IsNullOrEmpty(TextBox2.Text) ) //FAIL!!! else
that is, at least one txtBox has values
I was planning on using a custom validator but it seems that the validation function only gets called when something is written on the textBox i'm using has the 'control to validate'. Now, that doesn't work for me since I want to show an error message when both text boxes are empty. Is there a way to make the validation function to be called with, for example a postback? Or is there any other better approach to this case than the custom validator?