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Select datagridview rows by range or numbers

Posted on 2016-10-27
Medium Priority
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Hello,

I have textbox where user can input numbers like 3.4,7,8 or add a range like 6-12 for selection of datagridview rows.
Any suggestions on how can i achieve this.

Cheers
0
Question by:RIAS
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LVL 30

Expert Comment

ID: 41861896
0

Author Comment

ID: 41861900
Select the rows as per user input

example:

3.4,7,8 or add a range like 6-12
0

LVL 44

Expert Comment

ID: 41861913
Use string.split and split on the comma.
Look at each string in the array.
If it does NOT contain a hyphen then convert to a number (index of row) and select that row
else split into two strings at the hyphen.  The first is the index of the start row to select, the second is the index of the row to stop selecting at.  You will probably require a loop to achieve that - or should I not mention that nasty word  ;-)
1

LVL 30

Assisted Solution

Pawan Kumar earned 200 total points
ID: 41861934
Try...

int index = 2
string val1 =  dataset.Tables[0].Rows[index][Col_1].ToString();

string s = "1,2,3";
string[] values = s.Split(',');
for(int Counter = 0; i < values.Length; Counter++)
{
string a = dataset.Tables[0].Rows[Counter][Col_1].ToString();
}

string s = "1-6";
--Here get value 1 & 6 using substring function -- s.Substring(0,1);
for(int Counter = 1; i <= 6; Counter++)
{
string a = dataset.Tables[0].Rows[Counter][Col_1].ToString();
}
1

Author Comment

ID: 41861946
Pawan thanks !  Will try and get back
0

LVL 28

Accepted Solution

Ark earned 1800 total points
ID: 41861949
``````Private Function GetNumbers(input As String) As List(Of Integer)
Dim lst As New List(Of Integer)
Dim comma = input.Split(New Char() {","c}, StringSplitOptions.RemoveEmptyEntries)
For Each s In comma
Dim dash = s.Split(New Char() {"-"c}, StringSplitOptions.RemoveEmptyEntries)
If dash.Length = 0 OrElse dash.Length > 2 Then Continue For
Dim i1 As Integer
If Not Integer.TryParse(dash(0).Trim, i1) Then Continue For
If dash.Length = 1 Then
ElseIf dash.Length = 2 Then
Dim i2 As Integer
If Not Integer.TryParse(dash(1).Trim, i2) Then Continue For
lst.AddRange(Enumerable.Range(i1, i2 - i1 + 1))
End If
Next
Return lst
End Function
``````
Using:
``````DataGridView1.ClearSelection()
For Each num In GetNumbers("1,2 - 5,8,10 - 15")
DataGridView1.Rows(num).Selected = True
Next
``````
1

Author Comment

ID: 41861950
Thanks Ark!
0

Author Comment

ID: 41861964
Ark,It works perfectly mate, but slight issue regarding the numbers
As in dotnet the datagrid starts with 0
The user will input something like 1-10 which is actuallly  0-9 for the dsatragridview to select .
Any suggestions?
0

LVL 28

Expert Comment

ID: 41861966
DataGridView1.Rows(num-1).Selected = True
0

Author Closing Comment

ID: 41861967
Cheers!
0

Author Comment

ID: 41862066
Ark amazing code!!!
0

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