My Custom list has four columns(Doc ID, Created by, Assigned To, Assigned date). I want to filter the data in Data list view.
In my page, there are 4 text boxes and a Button is there for the user input (Doc ID, Created by, Assigned To, Assigned date )
When the user enters his input in text boxes and clicks the save button how do i change the filter query at runtime.
You can use XmlDefinition property of the XsltListViewWebPart. Here you can find good example how to do it
You can generate CAML query on page dynamically and then send in to List view as string parameter (in query string, or in hidden form field):
<View>
<Query>
{CAMLQueryString}
</Query>
<ViewFields>
...
</ViewFields>
<RowLimit Paged="TRUE">30</RowLimit>
<Aggregations Value="Off"/>
<Toolbar Type="Standard"/>
</View>
