drop down list value in asp net

Question

I want to add a value to the drop down list that cannot be selected  like a title  Ex  I have a month drop down list  The very first item should be  select month  this should not be selected  And next is from January to december  How can I do that   And this is my current code   string selectmonth    select   from tblmonth   SqlCommand scmselect   new SqlCommand selectmonth  scnbuboy    SqlDataReader sdrselect   scmselect ExecuteReader     drmonth DataTextField    month   drmonth DataValueField    monthID   drmonth DataSource   sdrselect   drmonth DataBind

User · Answer

VB Code   Dim ListItem1 As New ListItem   ListItem1 Text    put anything here  ListItem1 Value    0  drpTag DataBind   drpTag Items Insert 0  ListItem1    View    lt asp CompareValidator ID  CompareValidator1  runat  server  ErrorMessage  CompareValidator  ControlToValidate  drpTag     ValueToCompare  0  gt   lt  asp CompareValidator gt

User · Answer

You can try this  your ddl id Items Insert 0 new ListItem  Select

User · Answer

You can add an empty value such as   ddlmonths Items Insert 0  new ListItem  Select Month          And just add a validation to prevent chosing empty option such as asp RequiredFieldValidator

User · Answer

try this one       lt asp DropDownList ID  ddList  runat  server  gt       lt asp ListItem Value    gt --Select Month-- lt  asp ListItem gt       lt asp ListItem Value  1  gt January lt  asp ListItem gt       lt asp ListItem Value  2  gt Feburary lt  asp ListItem gt               lt asp ListItem Value  12  gt December lt  asp ListItem gt       lt  asp DropDownList gt    Value should be empty for the default selected listitem  then it works fine

User · Answer

lt asp DropDownList ID  DdlMonths  runat  server  gt       lt asp ListItem Enabled  true  Text  Select Month  Value  -1  gt  lt  asp ListItem gt       lt asp ListItem Text  January  Value  1  gt  lt  asp ListItem gt       lt asp ListItem Text  February  Value  2  gt  lt  asp ListItem gt                lt asp ListItem Text  December  Value  12  gt  lt  asp ListItem gt   lt  asp DropDownList gt    You can even use a RequiredFieldValidator which ignore this item  it considers it as unselected    lt asp RequiredFieldValidator ID  ReqMonth  runat  server  ControlToValidate  DdlMonths      InitialValue  -1  gt   lt  asp RequiredFieldValidator gt

User · Answer

In simple way  Its not possible  Because DropdownList contain ListItem and it will be selected by default   But  you can use ValidationControl for that    lt asp RequiredFieldValidator InitialValue  -1  ID  Req ID  Display  Dynamic   ValidationGroup  g1  runat  server  ControlToValidate  ControlID  Text     ErrorMessage  ErrorMessage  gt  lt  asp RequiredFieldValidator gt

User · Answer

These are ALL great answers if you want to work that hard   But my guess is that you already have the items you want for the list coming from a databound element  and only want to add to the top of that list the  Hey  dude - pick one   option   Assuming that is the case     Here s the EASY Answer   And it ALWAYS works      Do your Databound List just like you planned    THEN  in Visual Studio  edit the items on dropdown     Add ONE MANUAL ITEM  make that your  Select an Item  choice   Using the properties window for the item in VS2012  check it as selected   Now close that window  Now  go to the properties box in Visual Studio on the lower left hand  make sure the dropdown is selected   and look for the property  AppendDataBoundItems     It will read False  set this to True    Now you will get a Drop Down with all of your data items in it  PRECEDED BY your  Select an Item  statement made in the manual item   Try giving it a default value if possible  this will eliminate any errors you may encounter   The default is Zero  so if zero is not a problem  then leave it alone  if zero IS a problem  replace the default zero in the item with something that will NOT crash your code   And stop working so hard   that s what Visual Studio is for

User · Answer

Say you have a drop down called ddlMonths   ddlMonths Items Insert 0 new ListItem  Select a month   -1

User · Answer

To add items to drop down list with value in asp net using c  just add below codes for example   try       SqlConnection conn   new SqlConnection conStr       SqlCommand comm   conn CreateCommand        comm   conn CreateCommand        comm CommandText    SELECT title gid from Groups       comm CommandType   CommandType Text      conn Open        SqlDataReader dr   comm ExecuteReader        while  dr Read                 dropDownList Items Add new         ListItem dr 0  ToString   dr 1  ToString              catch  Exception e        lblText Text   e Message    finally     conn Close

[asp.net] drop down list value in asp.net

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