How to pass ID to controller

Question

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my code is
public ActionResult EditData(string id)
{
try
{
using (SqlConnection con = new SqlConnection(connStr))
{
string sql_cmd = "select UserId,UserName,FirstName,LastName from UserDetails where UserId=@id";
SqlCommand cmd = new SqlCommand(sql_cmd, con);

}
catch (Exception)
{

}
return View();
}

and view is

@using (Html.BeginForm(FormMethod.Post))
{

@grid.GetHtml(tableStyle:"webGrid",
headerStyle: "header",
alternatingRowStyle: "alt",
selectedRowStyle: "select",
columns: grid.Columns(
grid.Column("LastName","Last Name",format:@

@item.last_name

),
grid.Column("View Details", header: "Edit", format: @

@Html.ActionLink("Edit","EditData","UserInfo", new {id=item.user_id})

),grid.Column("Delete", header: "Delete", format: @

@Html.ActionLink("Delete",null,null, new { username = item.user_id })

)))

}

in controller i am getting null value in ID how do i get ID in controller

Posted 23-Feb-15 2:31am

sanjaysgh

Updated 23-Feb-15 2:32am

v2

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BacchusBeale · Answer 1 · 2015-02-24T13:42:00

You have not set the parameter for @id

string sql_cmd = "select UserId,UserName,FirstName,LastName from UserDetails where UserId=@id";

Also you should be making the Model classes from the SQL database via Entity Framework, then reference the Model class for UserDetails with DbContext or similar methods.

Read tutorials here: http://www.asp.net/mvc[^]

pim3nt3l · Answer 2 · 2015-02-24T14:22:00

First the parameter expected by the action, must cause routing problems, because is configured by default for HttpGet request. But when you do a submit of html form, the parameters send to the server is serialized different.

You should try this way:

[HttpGet]
public ActionResult EditData(int id)
{
try
{
using (SqlConnection con = new SqlConnection(connStr))
{
string sql_cmd = "select UserId,UserName,FirstName,LastName from UserDetails where UserId=@id";
SqlCommand cmd = new SqlCommand(sql_cmd, con);
cmd.Parameters["@id"].Value = id;
//TODO: ...
}
}
catch (Exception)
{
 
}
return View();
}

and view is

@using (Html.BeginForm(FormMethod.Get))
{

	@grid.GetHtml(tableStyle:"webGrid",
	headerStyle: "header",
	alternatingRowStyle: "alt",
	selectedRowStyle: "select",
	columns: grid.Columns(
	grid.Column("LastName","Last Name",format:@
	@item.last_name
	),
	grid.Column("View Details", header: "Edit", format: @
	@Html.ActionLink("Edit","EditData","UserInfo", new {id=item.user_id}, null)

	),grid.Column("Delete", header: "Delete", format: @
	@Html.ActionLink("Delete",null,null, new { username = item.user_id }, null)

	)))
}

More help:
https://msdn.microsoft.com/en-us/library/system.data.sqlclient.sqlcommand.parameters%28v=vs.110%29.aspx[^]
http://www.asp.net/mvc/overview/older-versions-1/controllers-and-routing/asp-net-mvc-routing-overview-cs[^]

How to pass ID to controller

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