How to access html form input from asp net code behind

Question

I have a basic HTML form that gets inserted into a server side div tag based on how many records exist in the database  This HTML form comes out just fine  and everything looks good  But on my action page I cannot seem to access the input elements from the code behind  I have tried using the Request scope but have come up empty on that approach  Any other suggestions   All of the below suggestions are great  and normally that is what I would do  But these forms are being built on the fly after the page is being compiled  so runat  server  did not do anything for me  It just passed that along to the html page

User · Answer

Simplest way IMO is to include an ID and runat server tag on all your elements.

<div id="MYDIV" runat="server" />

Since it sounds like these are dynamically inserted controls, you might appreciate FindControl().

User · Answer

If you are accessing a plain HTML form  it has to be submitted to the server via a submit button  or via javascript post    This usually means that your form definition will look like this  I m going off of memory  make sure you check the html elements are correct     lt form method  POST  action  page aspx  gt    lt input id  customerName  name  customerName  type  Text    gt   lt input id  customerPhone  name  customerPhone  type  Text    gt   lt input value  Save  type  Submit    gt    lt  form gt    You should be able to access the customerName and customerPhone data like this   string n   String Format   0    Request Form  customerName       If you have method  GET  in the form  not recommended  it messes up your URL space   you will have to access the form data like this   string n   String Format   0    Request QueryString  customerName       This of course will only work if the form was  Posted    Submitted   or done via a  Postback    i e  somebody clicked the  Save  button  or this was done programatically via javascript    Also  keep in mind that accessing these elements in this manner can only be done when you are not using server controls  i e  runat  server    with server controls the id and name are different

User · Answer

Edit  thought of something else   You say you re creating a form dynamically - do you really mean a  lt form gt  and its contents  cause asp net takes issue with multiple forms on a page and it s already creating one uberform for you

User · Answer

It should normally be done with Request Form  elementName     For example  if you have  lt input type  text  name  email    gt  then you can use Request Form  email   to access its value

User · Answer

What I m guessing is that you need to set those input elements to runat  server    So you won t be able to access the control   lt input type  text  name  email  id  myTextBox    gt    But you ll be able to work with   lt input type  text  name  email  id  myTextBox  runat  server    gt    And read from it by using  string myStringFromTheInput   myTextBox Value

User · Answer

What I m guessing is that you need to set those input elements to runat  server    So you won t be able to access the control   lt input type  text  name  email  id  myTextBox    gt    But you ll be able to work with   lt input type  text  name  email  id  myTextBox  runat  server    gt    And read from it by using  string myStringFromTheInput   myTextBox Value

User · Answer

Since you re using asp net code-behind  add an id to the element and runat server   You can then reference the objects in the code behind

User · Answer

Since you re using asp net code-behind  add an id to the element and runat server   You can then reference the objects in the code behind

User · Answer

It should normally be done with Request Form  elementName     For example  if you have  lt input type  text  name  email    gt  then you can use Request Form  email   to access its value

User · Answer

If you are accessing a plain HTML form  it has to be submitted to the server via a submit button  or via javascript post    This usually means that your form definition will look like this  I m going off of memory  make sure you check the html elements are correct     lt form method  POST  action  page aspx  gt    lt input id  customerName  name  customerName  type  Text    gt   lt input id  customerPhone  name  customerPhone  type  Text    gt   lt input value  Save  type  Submit    gt    lt  form gt    You should be able to access the customerName and customerPhone data like this   string n   String Format   0    Request Form  customerName       If you have method  GET  in the form  not recommended  it messes up your URL space   you will have to access the form data like this   string n   String Format   0    Request QueryString  customerName       This of course will only work if the form was  Posted    Submitted   or done via a  Postback    i e  somebody clicked the  Save  button  or this was done programatically via javascript    Also  keep in mind that accessing these elements in this manner can only be done when you are not using server controls  i e  runat  server    with server controls the id and name are different

User · Answer

It should normally be done with Request Form  elementName     For example  if you have  lt input type  text  name  email    gt  then you can use Request Form  email   to access its value

User · Answer

Edit  thought of something else   You say you re creating a form dynamically - do you really mean a  lt form gt  and its contents  cause asp net takes issue with multiple forms on a page and it s already creating one uberform for you

User · Answer

Since you re using asp net code-behind  add an id to the element and runat server   You can then reference the objects in the code behind

User · Answer

If you are accessing a plain HTML form  it has to be submitted to the server via a submit button  or via javascript post    This usually means that your form definition will look like this  I m going off of memory  make sure you check the html elements are correct     lt form method  POST  action  page aspx  gt    lt input id  customerName  name  customerName  type  Text    gt   lt input id  customerPhone  name  customerPhone  type  Text    gt   lt input value  Save  type  Submit    gt    lt  form gt    You should be able to access the customerName and customerPhone data like this   string n   String Format   0    Request Form  customerName       If you have method  GET  in the form  not recommended  it messes up your URL space   you will have to access the form data like this   string n   String Format   0    Request QueryString  customerName       This of course will only work if the form was  Posted    Submitted   or done via a  Postback    i e  somebody clicked the  Save  button  or this was done programatically via javascript    Also  keep in mind that accessing these elements in this manner can only be done when you are not using server controls  i e  runat  server    with server controls the id and name are different

User · Answer

Edit  thought of something else   You say you re creating a form dynamically - do you really mean a  lt form gt  and its contents  cause asp net takes issue with multiple forms on a page and it s already creating one uberform for you

User · Answer

Edit  thought of something else   You say you re creating a form dynamically - do you really mean a  lt form gt  and its contents  cause asp net takes issue with multiple forms on a page and it s already creating one uberform for you

User · Answer

Simplest way IMO is to include an ID and runat server tag on all your elements.

<div id="MYDIV" runat="server" />

Since it sounds like these are dynamically inserted controls, you might appreciate FindControl().

User · Answer

It should normally be done with Request Form  elementName     For example  if you have  lt input type  text  name  email    gt  then you can use Request Form  email   to access its value

User · Answer

Simplest way IMO is to include an ID and runat server tag on all your elements.

<div id="MYDIV" runat="server" />

Since it sounds like these are dynamically inserted controls, you might appreciate FindControl().

User · Answer

If you are accessing a plain HTML form  it has to be submitted to the server via a submit button  or via javascript post    This usually means that your form definition will look like this  I m going off of memory  make sure you check the html elements are correct     lt form method  POST  action  page aspx  gt    lt input id  customerName  name  customerName  type  Text    gt   lt input id  customerPhone  name  customerPhone  type  Text    gt   lt input value  Save  type  Submit    gt    lt  form gt    You should be able to access the customerName and customerPhone data like this   string n   String Format   0    Request Form  customerName       If you have method  GET  in the form  not recommended  it messes up your URL space   you will have to access the form data like this   string n   String Format   0    Request QueryString  customerName       This of course will only work if the form was  Posted    Submitted   or done via a  Postback    i e  somebody clicked the  Save  button  or this was done programatically via javascript    Also  keep in mind that accessing these elements in this manner can only be done when you are not using server controls  i e  runat  server    with server controls the id and name are different

User · Answer

What I m guessing is that you need to set those input elements to runat  server    So you won t be able to access the control   lt input type  text  name  email  id  myTextBox    gt    But you ll be able to work with   lt input type  text  name  email  id  myTextBox  runat  server    gt    And read from it by using  string myStringFromTheInput   myTextBox Value

User · Answer

Simplest way IMO is to include an ID and runat server tag on all your elements.

<div id="MYDIV" runat="server" />

Since it sounds like these are dynamically inserted controls, you might appreciate FindControl().

User · Answer

Since you re using asp net code-behind  add an id to the element and runat server   You can then reference the objects in the code behind

User · Answer

What I m guessing is that you need to set those input elements to runat  server    So you won t be able to access the control   lt input type  text  name  email  id  myTextBox    gt    But you ll be able to work with   lt input type  text  name  email  id  myTextBox  runat  server    gt    And read from it by using  string myStringFromTheInput   myTextBox Value

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