csharp combo automatic drop down listing

[shibili]

i am basically a vb6 programmer new in csharp. i want to know how to get drop down list in combobox, when keydown arrow pressed. Now it came when alt+keydown pressed. i am already tried to pass sendkeys alt+keydown through code, when keydown pressed.but no effect , pls help


Regards
shibi

[GaryTexmo]

Sorry, I'm not quite understanding. Do you need the dropdown to expand when you press the down arrow, or alt plus the down arrow, or both?

Please clarify, thanks!

*Edit: In looking at this further, it seems alt+down already expands a combobox in .NET.

[shibili]

Sorry, I'm not quite understanding. Do you need the dropdown to expand when you press the down arrow, or alt plus the down arrow, or both?

Please clarify, thanks!

*Edit: In looking at this further, it seems alt+down already expands a combobox in .NET.

i want to expand drop down to press down arrow

[GaryTexmo]

Ah ok, that's easy enough.

(The combo box, by default, does expand on alt+down arrow by the way)

Anyway, you can accomplish this by creating an event handler to handle the KeyDown event of a combo box. In that method, you can see if the key code is Keys.Down (may want to make sure the modifiers don't include alt, or it interferes with alt+down) and set the DroppedDown property of a combo box to true.

[shibili]

Ah ok, that's easy enough.

(The combo box, by default, does expand on alt+down arrow by the way)

Anyway, you can accomplish this by creating an event handler to handle the KeyDown event of a combo box. In that method, you can see if the key code is Keys.Down (may want to make sure the modifiers don't include alt, or it interferes with alt+down) and set the DroppedDown property of a combo box to true.

thanks gary, u help me a lot.

pls help me on my datagrid question

i wrote the below code and it works fine.


in initialize componeent add
this.cmbAcGroup .KeyPress += new System.Windows. Forms.KeyPressE ventHandler(thi s.cmbAcGroup_Ke yPress);
-------------
here cmbAcgroup is a combobox

private void cmbAcGroup_KeyP ress(object sender, System.Windows. Forms.KeyPressE ventArgs e)
{
this.AutoComple te(this.cmbAcGr oup, e, true);
cmbAcGroup.Focu s();
cmbAcGroup.Drop pedDown = true;
if (e.KeyChar == (char)13 )
{
cmbAcGroup.Drop pedDown = false;
}
}


#region Auto Complete combo box
public void AutoComplete(Co mboBox cb, System.Windows. Forms.KeyPressE ventArgs e, bool blnLimitToList)
{
string strFindStr = "";

if (e.KeyChar == (char)8)
{
if (cb.SelectionSt art <= 1)
{
cb.Text = "";
return;
}

if (cb.SelectionLe ngth == 0)
strFindStr = cb.Text.Substri ng(0, cb.Text.Length - 1);
else
strFindStr = cb.Text.Substri ng(0, cb.SelectionSta rt - 1);
}
else
{
if (cb.SelectionLe ngth == 0)
strFindStr = cb.Text + e.KeyChar;
else
strFindStr = cb.Text.Substri ng(0, cb.SelectionSta rt) + e.KeyChar;
}

int intIdx = -1;

// Search the string in the ComboBox list.

intIdx = cb.FindString(s trFindStr);

if (intIdx != -1)
{
cb.SelectedText = "";
cb.SelectedInde x = intIdx;
cb.SelectionSta rt = strFindStr.Leng th;
cb.SelectionLen gth = cb.Text.Length;
e.Handled = true;
}
else
{
e.Handled = blnLimitToList;
}

}

#endregion

[GaryTexmo]

Please keep your questions confined to the topic. If you have a datagrid question, please post another topic or if you already have one, please wait for an answer there.

Also, it really helps to wrap your code in code tags. It's the little # button on your editing box.

Lastly, I'm not overly experienced with data grids, so I tend to let the other experts answer those ones.