how to use value member and display member of dropdownlist

Question

4.00/5 (1 vote)

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I have three table 1) Categorycrt 2)Itemcrt 3) Pricefix

categorycrt table has a primarykey ProductId
Itemcrt table has a primarykey ItemId
Pricefix table has a primarykey PriceId and two foreignkeys ProductId from categorycrt table and ItemId from Itemcrt table

And on the design page for pricefix i have dropdownlist for Item and another dropdownlist for Product.
on selecting the category and item from the dropdownlist i wanted to enter the corresponding itemId and ProductId to the price fix table

what i want is by selecting the item dropdownlist the corresponding ItemId(primary key) of the Itemcrt Table should be inserted in the ItemId(foreign key) of the Pricefix table...

Kindly help me out as soon as possible

Posted 3-May-14 7:23am

Ajesh1986

Updated 3-May-14 17:40pm

v3

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Comments

José Amílcar Casimiro 3-May-14 13:26pm

What's the problem?

Ajesh1986 3-May-14 20:43pm

what i want is by selecting the item dropdownlist the corresponding ItemId(primary key) of the Itemcrt Table should be inserted in the ItemId(foreign key) of the Pricefix table...

[no name] 3-May-14 21:31pm

Okay and what is preventing you from doing this? What have you tried to do? What is the problem that you have encountered with the code that you have written?

abdul subhan mohammed 3-May-14 14:50pm

select the dropdownlist selectedvalue n save it, for both the dropdownlist.

eg: itemdropdownlist,
int itemid = convert.toint32(itemdropdownlist.selectedvalue);

hope this will help u.

Ajesh1986 3-May-14 20:42pm

Thanks for the reply brother,.. actually what i want is by selecting the item dropdownlist the corresponding ItemId(primary key) of the Itemcrt Table should be inserted in the ItemId(foreign key) of the Pricefix table...

abdul subhan mohammed 4-May-14 2:52am

not clear, dude.
plz mention columns of each table.

2 solutions

Solution 1

int itemid = convert.toint32(itemdropdownlist.selectvalue);
and then instert value of itemid in database.

Posted 6-May-14 1:37am

kunal r somani

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Ajesh1986 · Accepted Answer · 2014-05-07T04:20:00

protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            Fill_Combo();
        }
    }
    private void Fill_Combo()
    {
        DropDownList2.Items.Clear();
        DataTable dt = obj.display1();
        DropDownList2.DataSource = dt;
        DropDownList2.DataTextField = "ProductCategory";
        DropDownList2.DataValueField = "ProductId";
        DropDownList2.DataBind();
        DropDownList2.Items.Insert(0, "--Select--");
        DropDownList2.Focus();
        DropDownList1.Items.Clear();
        DataTable dt1 = obj2.display();
        DropDownList1.DataSource = dt1;
        DropDownList1.DataTextField = "Itemname";
        DropDownList1.DataValueField = "ItemId";
        DropDownList1.DataBind();
        DropDownList1.Items.Insert(0, "--Select--");
        DropDownList1.Focus();
            
       

    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        obj1.ItmId = DropDownList1.SelectedValue;
        obj1.PdtId=DropDownList2.SelectedValue;
        obj1.Rate=Convert.ToInt32(txtrate.Text);
        int res = obj1.save();

    }

by providing value to datavalue field the corresponding datatable primarykey will be inserted..... but dropdown.selectedvalue should be used