How Do I Prevent The User From Writing In Combobox In Winform App

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i have combo boxex for date of birth in my winform app,the default text in these boxes are day,month and year,how can i prevent the user from writing in it and how can i perform check if none of the value is not selected from comboboxes??

Posted 12-Aug-14 1:52am

Nainaaa

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Oshtri Deka · Accepted Answer · 2014-08-12T01:56:00

Solution 1

In designer view set your combo box's DropDownStyleproperty to DropDownList or by code:

C#

myCombo.DropDownStyle = ComboBoxStyle.DropDownList;

You can check whether some value is selected or not by checking SelectedIndex or SelectedValue property, it depends on how do you fill data into your combo boxes.

C#

if(myCombo.SelectedIndex != -1)
{
    //do something
}

//or

if(myCombo.SelectedValue != null)
{
    //do something
}

Posted 12-Aug-14 1:56am

Oshtri Deka

Updated 12-Aug-14 2:02am

v2

Comments

Nainaaa 12-Aug-14 8:31am

thanks....
but i also want that default text e.g month should also shown on combobox until user select any value from list.

Oshtri Deka 12-Aug-14 8:39am

Just set combos after filling to some default value or index.
For instance monthCombo.SelectedIndex = 0 and adjust above mentioned checks accordingly.
Good luck!

iftikharindher · Accepted Answer · 2014-08-12T01:57:00

Solution 2

Set your combo as DropDownList:

C#

this.comboBoxType.DropDownStyle = ComboBoxStyle.DropDownList;

Posted 12-Aug-14 1:57am

iftikharindher