dejandejanovic
asked on
How to filter gridview with checkboxlist if select 2 or more checkboxes?!
Hello,
I need help.
I'm a begginer, a student, and still learning asp.net with vb.net. I have stucked at filtering gridview with ComboBoxList as multiple checkboxes, if selected more then 2.
I have add a gridview with all columns from database (id, firstname, secondname), and assigned Comboboxlist control to gridview. It is working, but only if one checkbox is selected. But I want to retrieve, also rows if second, or third checkbox is selected.
Thank you in advance for help to anyone.
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I need help.
I'm a begginer, a student, and still learning asp.net with vb.net. I have stucked at filtering gridview with ComboBoxList as multiple checkboxes, if selected more then 2.
I have add a gridview with all columns from database (id, firstname, secondname), and assigned Comboboxlist control to gridview. It is working, but only if one checkbox is selected. But I want to retrieve, also rows if second, or third checkbox is selected.
SELECT * FROM [main] WHERE ([FirstName] = ?)Thank you in advance for help to anyone.
printscren1.jpg
printscren2.jpg
SOLUTION
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-- UPDATED VERSION of solution.
A code like below will work for you in case of multiple items selected.
CODE EXAMPLE
==============
Dim csvOfSelectedItems As String = ""
Dim li As ListItem
For Each li In CheckBoxList1.Items
If li.Selected Then
csvOfSelectedItems += li.Text + ","
End If
Next
If csvOfSelectedItems = "" Then
Response.Write("No item Selected")
Else
' Trim the last comma char
csvOfSelectedItems = csvOfSelectedItems.Substri
' Prepare Query string
Dim sqlQuery as String = "SELECT * FROM [main] WHERE [FirstName] IN (" + csvOfSelectedItems + ")"
' EXECUTE sqlQuery HERE and use the results.
End If
Hope this helps.
A code like below will work for you in case of multiple items selected.
CODE EXAMPLE
==============
Dim csvOfSelectedItems As String = ""
Dim li As ListItem
For Each li In CheckBoxList1.Items
If li.Selected Then
csvOfSelectedItems += li.Text + ","
End If
Next
If csvOfSelectedItems = "" Then
Response.Write("No item Selected")
Else
' Trim the last comma char
csvOfSelectedItems = csvOfSelectedItems.Substri
' Prepare Query string
Dim sqlQuery as String = "SELECT * FROM [main] WHERE [FirstName] IN (" + csvOfSelectedItems + ")"
' EXECUTE sqlQuery HERE and use the results.
End If
Hope this helps.
Dim csvOfSelectedItems As String = ""
Dim li As ListItem
For Each li In CheckBoxList1.Items
If li.Selected Then
csvOfSelectedItems += li.Text + ","
End If
Next
If csvOfSelectedItems = "" Then
Response.Write("No item Selected")
Else
' Trim the last comma char
csvOfSelectedItems = csvOfSelectedItems.Substring(1, csvOfSelectedItems.Length - 1)
' Prepare Query string
Dim sqlQuery as String = "SELECT * FROM [main] WHERE [FirstName] IN (" + csvOfSelectedItems + ")"
' EXECUTE sqlQuery HERE and use the results.
End IfASKER
Thank you for replies, but none code is working for me.
I have add a zip file. I hope someone could check it, and fix it.
thank....
Training.zip
I have add a zip file. I hope someone could check it, and fix it.
thank....
Training.zip
ASKER CERTIFIED SOLUTION
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
ASKER
It works. Thanks.
CODE EXAMPLE
==============
Dim mySqlQuery as String = "SELECT * FROM [main] WHERE [FirstName] IN "
Dim strchklist As String = ""
Dim li As ListItem
For Each li In CheckBoxList1.Items
If li.Selected Then
strchklist += li.Text + " "
End If
Next
If strchklist = "" Then
Response.Write("No item Selected")
Else
mySqlQuery = mySqlQuery + " (" + strchklist + ")"
' EXECUTE YOUR QUERY HERE.
End If
Hope this helps.