how to sum more then 1 textbox and total in another textbox?

Subin Thomas

7y891.NET

i have 33 textbox viz. txt1,txt2........txt33 etc. default value of all the textboxes os 0.

and one textbox i have which is txttotal.

when user put a number in any of the textbox automatically the sum should be calculated in txttotal.

and txttotal textbox should bve non editable.

5 Replies

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Ronika Jency7y ago
Please find below code for your question

Default.aspx
<form id="form1" runat="server">
<div>
<asp:TextBox AutoPostBack="true" runat="server" ID="txt1" OnTextChanged="txt1_TextChanged">
asp:TextBox>
div>
<br />
<div>
<asp:TextBox AutoPostBack="true" runat="server" ID="TextBox2" OnTextChanged="TextBox2_TextChanged">
asp:TextBox>
div>
<br />
<div>
<asp:TextBox AutoPostBack="true" runat="server" ID="TextBox3" OnTextChanged="TextBox3_TextChanged">
asp:TextBox>
div>
<br />
<div>
<asp:TextBox Enabled="false" runat="server" ID="TextBox4" OnTextChanged="TextBox4_TextChanged">
asp:TextBox>
div>
form>
Default.cs page
protected void txt1_TextChanged(object sender, EventArgs e)
{
var text1 = txt1.Text != null && txt1.Text != "" ? Convert.ToInt32(txt1.Text) : 0;
var text2 = TextBox2.Text != null && TextBox2.Text != "" ? Convert.ToInt32(TextBox2.Text) : 0;
var text3 = TextBox3.Text != null && TextBox3.Text != "" ? Convert.ToInt32(TextBox3.Text) : 0;
TextBox4.Text = Convert.ToString(text1 + text2+ text3);
}
protected void TextBox2_TextChanged(object sender, EventArgs e)
{
var text1 = txt1.Text != null && txt1.Text != "" ? Convert.ToInt32(txt1.Text) : 0;
var text2 = TextBox2.Text != null && TextBox2.Text != "" ? Convert.ToInt32(TextBox2.Text) : 0;
var text3 = TextBox3.Text != null && TextBox3.Text != "" ? Convert.ToInt32(TextBox3.Text) : 0;
TextBox4.Text = Convert.ToString(text1 + text2 + text3);
}
protected void TextBox3_TextChanged(object sender, EventArgs e)
{
var text1 = txt1.Text != null && txt1.Text != "" ? Convert.ToInt32(txt1.Text) : 0;
var text2 = TextBox2.Text != null && TextBox2.Text != "" ? Convert.ToInt32(TextBox2.Text) : 0;
var text3 = TextBox3.Text != null && TextBox3.Text != "" ? Convert.ToInt32(TextBox3.Text) : 0;
TextBox4.Text = Convert.ToString(text1 + text2 + text3);
}
Answer - Output:
+1
Jignesh Kumar7y ago
Hi Subin,

Please try this links,
https://forums.asp.net/t/1371335.aspx?Get+the+count+of+dynamic+generated+textbox+in+javascript+in+code+behind+
https://www.aspforums.net/Threads/137373/Calculate-Row-Total-of-dynamic-generated-TextBox-in-ASPNet-GridView-using-JavaScript/
-1
Bikash Sahu7y ago
where is problem in 1st link.

please send the code that you tried
-1
Subin Thomas7y ago
thanks Bikash for the response but 1st link i tried it not working second link is not like how i want, i want a simple c# code to do this operation can you help me with that
0
Bikash Sahu7y ago
hi subin

please refer below link and change according to your requirement

https://forums.asp.net/t/1868585.aspx?How+to+add+two+values+and+display+the+sum+in+another+textbox+

https://stackoverflow.com/questions/21694235/how-add-the-two-textbox-value-and-pass-to-another-textbox
+1