Develop Reference

How to reproduce a forum/twitter-like UI on Winform

As a classic forum, threads and replys are displayed on a page, with dark and light and dark and light backcolor.
I am trying to write a client of a forum on windows using winform. It is
At first, I have tried this way:
Add a big panel to the form, let's call it the PARENT PANEL.
Add small panels to the big panel like this:
panel1.Visible = false;
for (int i=0; i<5;i++)
{
Panel parent = new Panel();
parent.Height = 800;
Random ra = new Random();
TextBox p = new TextBox();
p.Text = "fehsuifq";
p.Multiline = true;
p.WordWrap = true;
p.Dock = DockStyle.Fill;
parent.BackColor = Color.FromArgb(ra.Next(0, 254), ra.Next(0, 254), ra.Next(0, 254));
p.BorderStyle = BorderStyle.None;
p.ReadOnly = true;
p.TabStop = false;
p.BackColor = this.BackColor;
parent.Controls.Add(p);
parent.Dock = DockStyle.Top;
panel1.Controls.Add(parent);
}
panel1.Visible = true;
Every panel(tenicially, a control) displays a thread's text and images and others details(like authors or avator).
Images are not shown until it is clicked.
when the image is clicked, it is loaded and the controls's height will change as result.
The PARENT PANEL will contains hundreds of these controls since there will be so many threads. It is and have to be scrollable, obviously.
But if I put a textbox in the control, the scroll wheel no longer work on the PARENT PANEL.If I use a label, it is not selectable.
I think this way can't be more stupid, completely.
So I am looking for a better to do this job, to display hundreds or even thousands threads/replys on winform, which is:
the height is dynamic, because the images inside will not load until it is clicked.
The text inside is selectable (I edited this just to disambiguate)
the PARENT PANEL can response to the mouse's wheel, just like twitter, forums.
So that I can use my scroll wheel to browse all the replys at one time. The loading is a background work.
Look at the picture, when the text is selected, the whole panel is still response to the wheel(just like normal webPage). This is a uwp app and I am not sure if winform can do this.

Operate FlowLayoutPanel Scroll

I have several pictureboxes added in FlowLayutPanel, There is and index which have a number of picture box im lookin at, i can change this index by buttons.
How can i configure my FlowLayoutPanel.VerticalScroll that i could look only at the picture box with name of my index, and i couldnt look at another picture boxes.
I suggest that i have to change FlowLayoutPanel.VerticalScroll.Minimum and Maximum, but i can`t, if i change minimum - it countinue to be 0. here is a code:
flowLayoutPanel1.Dock = DockStyle.Fill;
flowLayoutPanel1.FlowDirection = FlowDirection.TopDown;
flowLayoutPanel1.Controls.Add(pictureBox3);
flowLayoutPanel1.Controls.Add(pictureBox2);
flowLayoutPanel1.Controls.Add(pictureBox1);
flowLayoutPanel1.Controls.Add(pictureBox4);
flowLayoutPanel1.AutoScroll = true;
flowLayoutPanel1.WrapContents = false;
MessageBox.Show( flowLayoutPanel1.VerticalScroll.Maximum.ToString());
this.flowLayoutPanel1.VerticalScroll.Minimum = 300;
MessageBox.Show(flowLayoutPanel1.VerticalScroll.Minimum.ToString());
flowLayoutPanel1.PerformLayout();
How can i do that?

How to disable zoom in chart control in C#?

How can i disable zoom after mouse selection in System.Windows.Forms.DataVisualization.Charting.Chart control in a .Net 4.0 WinForms application? Actually I want to use selected area in other case but not for zooming.

Just set:
chart.ChartAreas["ChartAreaName"].AxisX.ScaleView.Zoomable = false;
chart.ChartAreas["ChartAreaName"].AxisY.ScaleView.Zoomable = false;

I have the same problem,this helpfull for me.
chart1.ChartAreas[0].AxisX.ScaleView.Zoomable = false;
chart1.ChartAreas[0].AxisY.ScaleView.Zoomable = false;

Custom tooltip control in WinForms

Is there a simple way to create and show a custom tooltip control in C# / WinForms?
My current thinking is either:
create a subclass of Tooltip,
override the OnPaint method, set it
as the parent control's tooltip
create a subclass of form and show
it manually
Any thoughts?

It depends on what you need for your tool tip. If you only need a tool tip with balloon shape, animation and fading effects with custom text color and background, It is easier to use ToolTip control
// Create your control
System.Windows.Forms.Button trialButton = new Button();
trialButton.Text = "Trial Button";
// Tool tip string
string toolTipText = "Hello World";
// ToolTip toolTip = new ToolTip(this.components);
ToolTip toolTip = new ToolTip();
toolTip.ToolTipTitle = "ToolTip Title";
toolTip.UseAnimation = true;
toolTip.UseFading = true;
toolTip.IsBalloon = true;
toolTip.Active = true;
toolTip.SetToolTip(button, toolTipText);

Add tool tip on a column of Grid(Winforms) using ToolTip class and is it possible or not?

I want to add a tooltip using ToolTip class on a column of a grid in winforms.
I want this because I need to extend duration of builtin grid tooltip in radgridview. If you can help me in settings the time of builtin tooltip of grid then it would also be sufficient.
EDIT: Can anybody just tell me that is it possible or not?
Thanks.

It's possible to add a ToolTip to an existing control. I've never used radgridview, so I can only give you a general direction to head.
ToolTip tooltip = new ToolTip();
tooltip.SetToolTip(grid, "your caption here");
tooltip.Popup += HandleToolTipPopup;
tooltip.AutoPopDelay = {time to display tooltip};
private void HandleToolTipPopup(object sender, PopupEventArgs e)
{
Point mouseLocation = Control.MousePosition;
Point relativeLocation = grid.PointToClient(mouseLocation);
// Check to see if it is within the area to popup on.
// Set e.Cancel to false if not.
}