C# :: Select Next Item In Combobox Dropdown?

Mar 14, 2014

I'm having issues with selecting the next item in sequence in a combobox dropdown. The dropdown consists of letters A-Z and there is a timer that I have running to change the letter every x minutes. What I need to do is if, for example, letter A is selected, when the timer goes off, it will change to letter B, etc. If it's at letter Z, it needs to go back to the first item, letter A.

letterCode.SelectedIndex = letterCode.SelectedIndex + 1;
if (letterCode.SelectedIndex >= 26)
{
letterCode.SelectedIndex += 0;
}

I have the above, but I keep getting an error:

InvalidArgument=Value of '26' is not valid for 'SelectedIndex'.

how to get this working (letter changing logic block).

View 8 Replies


ADVERTISEMENT

C# :: Using ListView To Show Content (selected Item) In ComboBox?

Jan 25, 2015

I'm using listView to show content (selected item) in ComboBox, TextBox, Labels..

I was using

DropDownStyle = DropDown

and actually i use DropDownStyle = DropDownList.

With this change,

comboB.Text = Name;

stopped working correctly (onload), only work after first click any item. Why?

I tried too

private void comboB_KeyPress(object sender, KeyPressEventArgs e)
{
e.Handled = true;
}

but with copy/paste with mouse i can add text in ComboBox.

PS: My objective is combobox no editable.

View 1 Replies View Related

C Sharp :: Listbox Item Display - How To Add Column From File To Combobox

Oct 4, 2012

How to display the item in listbox,which are selected from three combobox.

View 1 Replies View Related

Visual C++ :: Enable / Disable Menu Item 2 In OnUpdate Handler Of Menu Item 1?

Sep 15, 2014

I have two menu items. When item 1 is disabled, I want item 2 to be disabled as well. In the OnUpdate handler of menu item 1, I have tried to use "t_pMenu = pCmdUI->m_pMenu;", "t_pMenu = pCmdUI->m_pSubMenu;" and "t_pMenu = pCmdUI->m_pParentMenu;" but I always get NULL t_pMenu. How can I achieve this purpose?

Code:
void CDummyView::OnUpdateMenuItem1(CCmdUI* pCmdUI)
{
if(m_bShowMenuItem1) {
pCmdUI->Enable(TRUE);

[Code]....

View 14 Replies View Related

C# :: Set A Checkbox On Dropdown Menu Items?

Sep 14, 2014

I'm using winforms and I want to set a checkbox on a dropdown menu item, but I don't know how to access the dropdown menu items.

I know ToolStripMenuItem items are attached to ContextMenuStrip items but I'm not sure how to navigate into the ToolStripMenuItem section to read/set those menu items.

ToolStripMenuItem listbox_font_size;
cmsListBox = new ContextMenuStrip();
cmsListBox.Items.Clear();

[Code].....

View 14 Replies View Related

C Sharp :: How To Bind DropDown List

Feb 16, 2013

<asp:TemplateField HeaderText="Group_Id"> 
<ItemTemplate> <asp:Label ID="G1" runat="server" Text='<%# Eval("Group_Id") %>'></asp:Label> 
</ItemTemplate> <EditItemTemplate> <asp:TextBox ID="G2" runat="server" Text='<%# Eval("Group_Id") 

[Code] ....

on running i find this error

Compiler Error Message: CS1061: 'ASP.webform12_aspx' does not contain a definition for 'Group_Item_Name_SelectedIndexChanged' and no extension method 'Group_Item_Name_SelectedIndexChanged' accepting a first argument of type 'ASP.webform12_aspx' could be found (are you missing a using directive or an assembly reference?)

Source Error:

Line 143: </EditItemTemplate>
Line 144: <FooterTemplate>
Line 145: DropDownList ID="G3" runat="server" AutoPostBack="True"
Line 146: onSelectedIndexChanged=" Group_Item_Name_SelectedIndexChanged" Width="133px">
Line 147:</asp:DropDownList>

View 1 Replies View Related

C Sharp :: Convert Dropdown List To Int Datatype

Mar 16, 2013

I am need to compare 2 items from 2 separate drop down lists. These values are of int type. Say for example 2 drop down lists showing years. Now i need to find out these 2 years selected is greater or nearer to the current year.

I tried converting the values i receive from the drop down lists to int variables. But i am getting error then. I gave it like below.

int tmp = Convert.ToInt32(ddl_1.SelectedItem.Text);

this gives an error like this - Input string was not in correct format.

I need to know how to put an item from a drop down list to a variable of int data type.

View 1 Replies View Related

C Sharp :: One Dropdown Selected Value Is Affected By Another Dropdownlist?

Nov 13, 2013

I have created a form (in ASP.NET and C#) which have 5 dropdown

1.3rd dropdown fill on the basis of 1st n 2nd dropdown value

2.5th dropdown fill on the basis of 4th dropdown value

I applied onselectedindexchanged event on 2nd and 4th dropdown and both are autopostback true.All values come according to the requirement.

Problem is when I select a value in 3rd dropdown and it becoming change when I select some value from 4th dropdown.

View 1 Replies View Related

C Sharp :: Passing Selected Row From Gridview To Dropdown

May 17, 2013

passing selected row in gridview to my dropdown. I have 1 gridview, 1 textbox and 1 dropdown list box. My dropdown is populated by SqlDataSource from my table Country. On my gridview, I have 3 columns, which are SELECT, NAME and COUNTRY. Under SELECT column, I have my hyperlinked Select, every time I clicked on a certain row NAME will pass in textbox (no problem with that), but in my dropdown it does not populates the COUNTRY that I choose. For example, I have Jack for name and USA for country. Beside Jack and USA, I have a hyperlink Select, when I click Select, Jack will display on my textbox and supposed to be USA will display on my dropdown but not displaying instead it says an error "'cboCountry' has a SelectedValue which is invalid because it does not exist in the list of items. Parameter name: value".

I have tried the codes below:

protected void GridView2_SelectedIndexChanged(object sender, EventArgs e)
{
txtname.Text = GridView2.SelectedRow.Cells[1].Text;
cboCountry.Text = GridView2.SelectedRow.Cells[2].Text;
}

Only the textbox os working, no luck at all in dropdown...I'm using c# and asp.net.

View 1 Replies View Related

C# :: Flat Style Dropdown Menu Not Drawing Correctly In XP

Apr 23, 2014

I'm having issues with drawing a flat style dropdown menu in XP.

Here is the custom dropdown menu element:

public class FlattenCombo : ComboBox {
private Brush BorderBrush = new SolidBrush(SystemColors.WindowFrame);
private Brush ArrowBrush = new SolidBrush(SystemColors.ControlText);
private Brush DropButtonBrush = new SolidBrush(SystemColors.Control);
public Color HighlightColor { get; set; }

[Code] ....

Here is what it looks like in XP:

And here's what it should look like (this is how it's rendered in Windows Vista/7):

View 3 Replies View Related

C Sharp :: DropDown Values Are Changed When Delete A Record In GridView

Aug 6, 2012

I have a Gridview ,in that one of the Column is DropDownList .I have 10 Records in my Grid and my DropDown Values are like this 1,2,3....10.This is the format to store my DropDown values ,if i delete 4th Row ,then my DropDown Values are Changed like 1,2,3,4....9.This is my task ,but i'm getting this format 1,2,3,--,5...10.

View 1 Replies View Related

C Sharp :: Compile SQL Table Using Dropdown List Boxes Into TextBox

Sep 11, 2012

I am completely new to SQL server i know a few of the basics. I have a VS2010 asp.net c# application with two dropdown listboxes and a textbox. I need to calculate the numbers e.g 3 + 3 = Medium, using the table below to calculate the answer so i can insert the output value into a textbox.

Table
12345
1ColdColdColdColdHOT
2ColdColdColdMediumHOT
3ColdMediumMediumHOTHOT
4MediumMediumMediumHOTHOT
5MediumMediumMediumHOTHOT
Drop down Listbox3Drop down Listbox3

TextBoxMedium

View 3 Replies View Related

C# :: Populate ComboBox From Txt File

Sep 12, 2014

I am trying to fill a combobox using the data from a txt file, with the new line as a split.

Currently it is throwing a System.ArgumentException in mscorlib.dll

try {
string[] lineOfContents = File.ReadAllLines(Properties.Resources.departments_list);
foreach (var line in lineOfContents) {
string[] tokens = line.Split('

[Code]...

My txt list is a resource in my project.

Accounts,
Power,
Commercial,
Procurement,
HumanResources,
Plant,
IT,
Reinstatement,
HealthSafety

why this is throwing the exception?

View 8 Replies View Related

C# :: WPF Binding List To ComboBox

Sep 30, 2014

trying to bind a List of Objects to a ComboBox (just for testing) but I can't seem to get it working :S

This is how my Object is setup:

public class User
{
public string ID { get; set; }

[Code].....

View 10 Replies View Related

C# :: Link Combobox With SQL Column

Oct 19, 2014

When I try to link combobox with sql column i get error !!

void comfunction() {
string constring = "Data Source=LC-VAIO\SQLEXPRESS;Initial Catalog=sample1;Integrated Security=True";
string query = "select * from tbltest";
SqlConnection cn = new SqlConnection(constring);
SqlCommand cmd = new SqlCommand(query,cn);
SqlDataReader dreader;

[Code] ....

I got error from "string sname = dreader.GetString("name"); "

And this how i try to link it...

View 9 Replies View Related

C# :: Adding Value To ComboBox After Button Is Pressed

Mar 10, 2014

I have been learning C# so I've been dragging and dropping. I have a "First Name" and "Last Name" text field. I want to add this to a combo box called something like "User List", which will list the last named then the first names. However I figure I can work with something that can get me to store the names in the combo box.

So. I have two things I need to know:

What do I have to do to have when the button is pressed, add to the combo box?

Is there a way to retain all the entries I have entered? Or no?

View 8 Replies View Related

C# :: Find Event For Combobox When Its Selected Value Changes

Jan 28, 2015

I'm trying to find an event for the combobox when its selected value changes , but I can't seem to find the right one since I've tried several events in the dataGridView that are just triggering at the wrong moments. I need to remove the selected item from that combobox so that it doesn't get selected again at the second combobox which usually have the same items .

View 5 Replies View Related

C# :: Get Selection From ComboBox / Getting Binding Path Instead?

Nov 19, 2014

I have a comboBox that I created in XAML using using binding and I'm unable to get the selection. I've tried everything I could think of or find on, but no luck.

Here's the relevant XAML and C# code for the comboBox:

<ComboBox Name="projSelected" Selectionchanged="projSelected_Selectionchanged" HorizontalAlignment="Left" Margin="424,27,0,0" VerticalAlignment="Top" Width="199" DisplayMemberPath="proj"/>
projSelected.ItemsSource = DAL.projectList;

Then here is where I try to check the selected value:

private void projSelected_Selectionchanged(object sender, SelectionchangedEventArgs e) {
projectDataList.ItemsSource = null;
projectDataList.Items.Clear();

[Code] ....

And here is my output in the MessageBox that I'm using to test the code:

Quote

project=Website selected=employeeProjects.project

View 7 Replies View Related

C# :: Using Combobox To Change Image In Picturebox?

Jun 13, 2014

I've been working on making a sprite generator and this is one thing that has kept giving me difficulties. No matter what I've looked up nothing directly says how to nor can I find anything on a similar topic to try and apply to it either. I know how to add the resources and names for the options but how do I get the options to make my picturebox image change in relation to the selection?

View 4 Replies View Related

C/C++ :: How To Assign Lines Of Text Using Combobox

May 5, 2013

So I'm working on program I had in Windows Form Application.

I have a combobox that lists the years 1981-2013. Beside it, a simple Enter button.

I wanted to be able to assign individual lines of text to each year that would be displayed in the message box.

Like if the user selects 1981, clicks Enter and the message box displayed "In the year of 1981.." but if they select 1982, the message box displayed "In the year of 1982.." I have everything else I want working, except that I can't figure out how to assign different lines of text to different years.

View 2 Replies View Related

C Sharp :: Move Items In ComboBox?

May 17, 2012

I have a data-bound ComboBox and I populate a DataSet with the values returned from a SQL query.
 
        public DataSet CompanyArray(DataSet dataSet) {
            SqlConnection connection = InstancesTest.IDataInterface.DefineConnection();  
            SqlCommand command = new SqlCommand();
            command.CommandText = "usp_CompanyArray";
            command.CommandTimeout = 20000;

[code]....

All this works fine. The reason I populated it in an array was so that I could sort the items alphabetically. I know I could just do an "order by" in SQL but I chose this route.

What I'm after is putting a "Please Select" at index 0 in the ComboBox. How can I move this value to the top of the list, without reordering the sorted list?And I don't really want to insert a "Please Select" as a first row in a database table.

View 2 Replies View Related

Visual C++ :: How To Sort Combobox After It Has Been Created

Feb 1, 2013

I have a combobox which doesn't have the CBS_SORT style and after adding some items I'd like to offer the ability for the user to sort it alphabetically by clicking on a given button. How can I sort the combobx after it has been created and some items added to it ?

View 4 Replies View Related

Visual C++ :: Making Combobox Drop UP In MFC?

Nov 21, 2012

I'm using MFC, and I need to make the combo box drop down list to be draw up - above the contro, instead of below it. How to make this happen?

View 4 Replies View Related

Visual C++ :: How To Adjust Combobox Height

Dec 30, 2013

how to adjust the combo box height?

I can adjust the combo box width and also the dropdown list height but not the combo box height.

View 12 Replies View Related

C# :: Datagridview Combobox Selection Clear After Adding New Row

Dec 25, 2014

I have 2 datagridview in one windows form, When I click row from datagridview1, it shows in datagridview2 (Select *from....). Also I have combobox column in datagridview2. My question is, when I select items in combobox, and click to new row in datagridview 1, datagridview2 combobox's is getting empty. it is my code:

private void dataGridView1_CellDoubleClick_1(object sender, DataGridViewCellEventArgs e) {
try {
int id = Convert.ToInt32
(dataGridView1.Rows[dataGridView1.CurrentRow.Index].Cells["id"].Value);//3

[Code] .....

View 8 Replies View Related

C Sharp :: How Selected Value In Combobox Return String

May 29, 2013

string st=combobox1.selectedvale.tostring();

combo box return 2 item ,

1:text
2:value

The value of combo not type of(int),the value type (string)

How value ofcombobox return data with type(string)?

View 2 Replies View Related







Copyrights 2005-15 www.BigResource.com, All rights reserved