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+---- Thread: find strings in listbox (/showthread.php?tid=2092)
- soryjero - 08-01-2013
hello,
i am trying to find indexes of items from a string.
i introduce a string in a textbox and click on a search button which has this function:
listBox1.FindString(textBox1.Text)
but with this, i only get first index.
how could i do to get all indexes?
i have tried
int[] idxs = listBox1.FindString(textBox1.Text)
but idxs is array type and listBox1.FindString(textBox1.Text) is int type, so i get an error.
could anyone help me please?
thanks in advance.
- ReturnKratos - 08-01-2013
i usually use this (vb.net)
Dim searchString As String = TextBox4.Text
Dim index As Integer = UserList.FindString(searchString)
If string.contains = true then, else error.
If index <> -1 Then
UserList.SetSelected(index, True)
Else
MsgBox("Not Found")
End If
may be in c# can be like :
string searchString = TextBox4.Text;
int index = UserList.FindString(searchString);
// If string.contains = true then, else error.
if (index != -1) {
UserList.SetSelected(index, true);
} else {
Interaction.MsgBox("Not Found");
}
- soryjero - 08-01-2013
the problem of this is i only get one index and i want to get all indexes that contains char i have introduced in textbox
- ReturnKratos - 08-01-2013
ah, ok i undertand but i cant help you. i think you must create e list where put all indexes founded in it then show in the listbox, wait someone help you as well tham me
- Wizatek - 08-01-2013
I usually keep all listbox item in a List and when i search for something in the list u can loop trough that list and add everything that matches to the listbox
- someone - 08-01-2013
According to MSDN:
2
Finds the first item in the 2 that starts with the specified string.
FindString has 2 overloads:
2
Have you looked at this:
2
Finds the first item in the 2 that starts with the specified string. The search starts at a specific starting index.
List<int> foundIndexes = new List<int>();
int index = -1, firstIndex = -1;
while ((index = listBox1.FindString("test", index)) !=-1){
if(index == firstIndex ){
break;
}
if (firstIndex == -1){
firstIndex = index;
}
foundIndexes.Add(index);
}
FindString only looks for string that starts with your string, if you want to search for strings that are exactly like your string use FindStringExact:
2
2
- soryjero - 08-01-2013
According to MSDN:
2
FindString has 2 overloads:
2
Have you looked at this:
2
List<int> foundIndexes = new List<int>();
int index = -1, firstIndex = -1;
while ((index = listBox1.FindString("test", index)) !=-1){
if(index == firstIndex ){
break;
}
if (firstIndex == -1){
firstIndex = index;
}
foundIndexes.Add(index);
}
FindString only looks for string that starts with your string, if you want to search for strings that are exactly like your string use FindStringExact:
2
2
thanks. tomorrow i will try it and i post here.
- soryjero - 08-02-2013
I usually keep all listbox item in a List<string> and when i search for something in the list u can loop trough that list and add everything that matches to the listbox
According to MSDN:
2
FindString has 2 overloads:
2
Have you looked at this:
2
List<int> foundIndexes = new List<int>();
int index = -1, firstIndex = -1;
while ((index = listBox1.FindString("test", index)) !=-1){
if(index == firstIndex ){
break;
}
if (firstIndex == -1){
firstIndex = index;
}
foundIndexes.Add(index);
}
FindString only looks for string that starts with your string, if you want to search for strings that are exactly like your string use FindStringExact:
2
2
thanks again someone and wiza.
works perfectly.