I know now normally you can get the value of a text input using the following:
txtName.Text
But because my input is inside of a LoginView I am using FindControl like this:
LoginView1.FindControl("txtComment")
This successfully find the text input but returns its type rather than the value. Adding the Text function at the end does not work.
Try casting that Control to TextBox. FindControl returns a Control which doesn't have the Text property
TextBox txtName = LoginView1.FindControl("txtComment") as TextBox;
if (txtName != null)
{
return txtName.Value;
}
It has been a while since I used the controls, but i believe it is:
string text = ((TextBox)LoginView1.FindControl("txtComment")).Text;
Related
I need to get the text value from the textbox on the web form. In the documentation its mentioned that System.Web.UI.WebControl.Textbox has a property Text but I get an error when I try to use it.
string FieldName= "";
string FieldValue="";
if (inputValues[i] is System.Web.UI.WebControls.TextBox)
{
FieldName = inputValues[i].ClientID;
FieldValue = inputValues[i].Text; // error
}
The error shown is System.Web.UI.WebControl.Textbox does not contain the definition of Text. How do I get the text value from textbox control ?
Try casting inputValues[i] to a System.Web.UI.WebControl.Textbox. Then access the Text property:
FieldValue = ((System.Web.UI.WebControl.Textbox)(inputValues[i])).Text;
I want to get the value of disabled textbox control.
First I am finding the textbox
TextBox txt1 = (TextBox)(Page.FindControl("txt1"))
Then saving the value of the textbox
decimal val1 = Convert.ToDecimal(txt1.Text.Trim().ToString())
But I am not getting any value because it is not able to find the control because my Textbox control is disabled.
Thanks in advance
TextBox might be nested inside other control. If so, you want to find it recursively.
For example,
Helper Method
public static Control FindControlRecursive(Control root, string id)
{
if (root.ID == id)
return root;
return root.Controls.Cast<Control>()
.Select(c => FindControlRecursive(c, id))
.FirstOrDefault(c => c != null);
}
Usage
var txt1 = (TextBox)FindControlRecursive(Page, "txt1");
A few more details would be helpful. It should be as simple as:
string val1 = txt1.text;
You shouldn't even need to use FindControl unless there is a specific reason.
Are you sure you are getting the textbox in txt1
also
string val1 = Convert.ToDecimal(txt1.Text.Trim().ToString())
Your code is wrong.. how can you convert a decimal into a string
I'm assuming that you have a numeric value in your textbox, so try doing it like this:
decimal value = 0;
string money = String.Empty;
if(!string.IsNullOrEmpty(txtMoney.Text))
name = txtMoney.Text
value = Convert.ToDecimal(name);
That will validate your textbox to avoid a null, but will also convert it into a decimal value for it. Hope it helps.
You shouldn't need to FindControl before you can assign the value, you should be able to pass values in and out, as long as your markup has runat="server". The server side postback will provide access to the inner content of the control without a problem.
After testing, a disabled control won't push the value during a postback. You really should use the HiddenField.
However, a <asp:HiddenField> may be better suited to your requirements. Rather than a disabled textbox. Which would like like this:
string cash = String.Empty;
if(!string.IsNullOrEmpty(hfMoney.Value))
cash = hfMoney.Value;
The hidden field will always be hidden, thus it is always accessible.
I am building a String and the code looks like
String status = "The status of my combobox is " + comboBoxTest.SelectedText
I am using WinForm in VS2010
The result looks like
"The status of my combobox is "
I think you want to use
String status = "The status of my combobox is " + comboBoxTest.Text
SelectedText property from MSDN
Gets or sets the text that is selected in the editable portion of a
ComboBox.
while Text property from MSDN
Gets or sets the text associated with this control.
From the documentation:
You can use the SelectedText property to retrieve or change the currently selected text in a ComboBox control. However, you should be aware that the selection can change automatically because of user interaction. For example, if you retrieve the SelectedText value in a button Click event handler, the value will be an empty string. This is because the selection is automatically cleared when the input focus moves from the combo box to the button.
When the combo box loses focus, the selection point moves to the beginning of the text and any selected text becomes unselected. In this case, getting the SelectedText property retrieves an empty string, and setting the SelectedText property adds the specified value to the beginning of the text.
I face this problem 5 minutes before.
I think that a solution (with visual studio 2005) is:
myString = comboBoxTest.GetItemText(comboBoxTest.SelectedItem);
Forgive me if I am wrong.
I think you dont need SelectedText but you may need
String status = "The status of my combobox is " + comboBoxTest.Text;
To get selected item, you have to use SELECTEDITEM property of comboBox. And since this is an Object, if you wanna assign it to a string, you have to convert it to string, by using ToString() method:
string myItem = comboBox1.SelectedItem.ToString(); //this does the trick
Try this:
String status = "The status of my combobox is " + comboBoxTest.text;
Here's how I would approach the problem, assuming you want to change the text of say, a label
private void comboBoxtest_SelectedIndexChanged(object sender, EventArgs e)
{
var combotext = comboBoxtest.Text;
var status = "The status of my combo box is" + combotext;
label1.Text = status;
}
All of the previous answers explain what the OP 'should' do. I am explaining what the .SelectedText property is.
The .SelectedText property is not the text in the combobox. It is the text that is highlighted. It is the same as .SelectedText property for a textbox.
The following picture shows that the .SelectedText property would be equal to "ort".
If you bind your Combobox to something like KeyValuePair, with properties in the constructor like so...:
DataSource = dataSource,
DisplayMember = "Value",
ValueMember = "Key"
so dataSource is of type KeyValuePair...
You end up with having to do this...
string v = ((KeyValuePair)((ComboBox)c).SelectedItem).Value;
(I had a Dynamic form - where c was of type Control - so had to cast it to ComboBox)
If you just want to know the text in the ComboBox with the editable text box (or the ComboBoxStyle.DropDown style) you can use this:
string str = comboBox.SelectedItem != null ?
comboBox.GetItemText(comboBox.SelectedItem) : comboBox.Text;
or try this code
String status = "The status of my combobox is " + comboBoxTest.SelectedItem.ToString();
if I have a datalist with textbox and a button inside and i want to access the value of the textbox and pass it to the listener of the button, anyone knows how to do that?
I know how.
Let's say you have a DataList name myDataList, and a TextBox in it named by myTextBox.
foreach (DataListItem item in myDataList.Items)
{
TextBox myTextBox = (TextBox)item.FindControl("myTextBox");
string text = myTextBox.text;
// Do whatever you need with that string value here
}
This loops through all of the items in your DataList and places the value of your TextBox into a local string variable named "text". From there, you can do whatever else needs to be done.
I am creating a TextBox with the following code:
TextBox textBox = new TextBox();
textBox.Name = propertyName;
textBox.Text = value;
textBox.Width = FormControlColumnWidth;
textBox.SetResourceReference(Control.StyleProperty, "FormTextBoxStyle");
sp.Children.Add(textBox); //StackPanel
FormBase.Children.Add(sp);
On a button click, I want to get the text value of that text box, but I can't specify in code:
string firstName = FirstName.Text;
since "FirstName" will be defined at runtime. So how do I get the text value of the Textbox without knowing the name of the textbox at compile time?
The following is what I have so far but it says that it can't find "FirstName" even though it gets defined at runtime:
private void Button_Save(object sender, RoutedEventArgs e)
{
using (var db = Datasource.GetContext())
{
var item = (from i in db.Customers
where i.Id == TheId
select i).SingleOrDefault();
item.FirstName = ((TextBox)FindResource("FirstName")).Text;
db.SubmitChanges();
}
}
REPRODUCABLE EXAMPLE:
I posted a full reproducable example of this problem here: Why can't I access a TextBox by Name with FindName()?, perhaps easier to analyze.
The simplest solution would probably to keep a reference to your textbox somewhere in your code. Just add a
private TextBox _textbox
at the top of your class and set it to the TextBox you add in your code. Then you can refer to it in your Button_Save event handler.
You can retrieve it like this:
TextBox tb=(TextBox)Children.First(w=>w.Name=="FirstName");
Not sure what that sp in your code is, but if you really need the 2nd level of controls, you could run a foreach loop over the first level then search by name on the second level.
The answer to this question is you have to use this.RegisterName("FirstName", textBox); which is explained here: Why can't I access a TextBox by Name with FindName()?
You can find any element using FindName:
var c = (FrameworkElement)this.FindName("somename");
I can't write comments, so this is as a reply to your comment.
Why not use a
Dictionary<string, TextBox>
as a class property?
that way you can keep references to an indefinite number of textbox instances in the class AND access them easily by name in the dictionary?