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Adding date automatically to textbox when i select an item from drop down list

Posted on 2012-03-19
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Last Modified: 2012-03-21
I have a drop down list which has 3 items in it, i also have two Textboxes, Textbox1 and Textbox2. I want that when I select item1 from Dropdownlist and enter a date in Textbox1, The date in Textbox2 should be changed to 3years ahead of the date in Textbox1. Similarly when i select Item2 in dropdownlist and enter a date in Textbox1 the date in textbox2 should be automatically changed to (Textbox1 date+5years). I have the date in MM/DD/YYY format. Any ideas how to achive it using C# code. I know that I can use a stored procedure for this but I want to accomplish this using C# code.
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Question by:skolanti
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LVL 29

Expert Comment

by:QPR
ID: 37740005
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Author Comment

by:skolanti
ID: 37742735
Hi, I am a beginner in ASP.Net web development, Can you provide me with sample code according to my Scenario?
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LVL 29

Accepted Solution

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QPR earned 500 total points
ID: 37744496
aspx page:

 <asp:DropDownList ID="DropDownList1" runat="server"
    onselectedindexchanged="DropDownList1_SelectedIndexChanged"
        AutoPostBack="True">
        <asp:ListItem>Select</asp:ListItem>
        <asp:ListItem Value="3">3 years</asp:ListItem>
        <asp:ListItem Value="5">5 years</asp:ListItem>
    </asp:DropDownList>
    <p>
        <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox><br />
        <asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
    </p>



aspx.cs page

protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
    {

        if (TextBox1.Text != "")
        {
            DateTime GivenDate = Convert.ToDateTime(TextBox1.Text);

            if (DropDownList1.SelectedValue == "3")
            {
                TextBox2.Text = GivenDate.AddYears(3).ToString();
            }
            if (DropDownList1.SelectedValue == "5")
            {
                TextBox2.Text = GivenDate.AddYears(5).ToString();
            }
        }
    }
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Author Comment

by:skolanti
ID: 37747475
Thanks, This code worked but I had to make some changes based on my program.
0
 

Author Closing Comment

by:skolanti
ID: 37747488
Thanks, this code worked fine but I had to make some changes based on my Program logic.
0
 
LVL 29

Expert Comment

by:QPR
ID: 37749488
B is a bit unfriendly, I gave you the entire code needed to do what you needed... but thanks anyway
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