ASP.NET和SQL将两个表单元格的值相加并保存在该行的第三个单元格中

Question

My question is very simple, I have a table with four columns and those are:

ID int

value01 int

value02 int

total int

In the asp.net page the user will insert in a textbox the value of value01 and value02 and automatically the total will add the value of both of those columns without the need of a user doing anything.

Also the table will have multiple rows therefore the total of one row should be the value01 and value02 addition of that current row ?

Answer 1

customize below javascript to your grid

function sum() {
    var txtFirstNumberValue = document.getElementById('<%= txtjirayat1.ClientID %>').value;
    var txtSecondNumberValue = document.getElementById('<%= txtbagayat1.ClientID %>').value;
    var txtthirdno = document.getElementById('<%= txtpad.ClientID %>').value;
    var result = parseFloat(txtFirstNumberValue) + parseFloat(txtSecondNumberValue) + parseFloat(txtthirdno);
    if (!isNaN(result)) {
        document.getElementById('<%= txttotal.ClientID %>').value = result;

    }
}

Answer 2

尝试这个

Update TableName Set total = value01 + value01 Where Id = @ID