Binding Data to text box

[sudharani]

Hi friends,
I have created a form with a dropdown list and a text box and i have a table named customer with fields cid and name in database.
I successfully binded the cid column to dropdown list.now my problem is i want to bind the name into the text box based on cid selected in drop down list.
Please helpme doing this.
I need it very urgent.
Thanks.

[reach_yousuf]

Hello dear

You can use select_IndexChangeEvent Like this...

Protected Sub MyDropDownList_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyDropDownList.SelectedIndexChanged
        
              Mytextbox.text =  MyDropDownList.selectedItem.text
        
    End Sub

And make sure Your Dropdownlist must have Autopostback property = true

Mark as solved if it helps you!!!

[sudharani]

ThanK U for your immediate reply.
But the Text Box should display the corresponding name of customer once i select the cid (Customer iD) from the drop down list.
I need coding in c#.

[praveenkumarm]

Hi,
You might have stored the name of the customer in the database.
Just write a query to fetch the name from the table and add it to the textbox.

protected void dropdownlst_selectectchange(object s, evetntargs s)
{
string str=dropdownlist1.selecteditem.text;
string sql="select name from customer where custid="+str;
sqlcommand cmd=new sqlcommand(sql,connectionstring)
sqldatareader dr=cmd.executereader()
while(dr.read())
{
textbox1.text=dr[0].tostring();
}

}

[sudharani]

Hi,
You might have stored the name of the customer in the database.
Just write a query to fetch the name from the table and add it to the textbox.

protected void dropdownlst_selectectchange(object s, evetntargs s)
{
string str=dropdownlist1.selecteditem.text;
string sql="select name from customer where custid="+str;
sqlcommand cmd=new sqlcommand(sql,connectionstring)
sqldatareader dr=cmd.executereader()
while(dr.read())
{
textbox1.text=dr[0].tostring();
}

}

Thank U very much praveen,
Now i have another problem that i am not able to select other cid from the drop down list.If i select another "cid" from the DDL also it is not effecting.It is always displaying the first item of the list.
How to solve this.please help me.

[praveenkumarm]

Hi,
May be you have not set the AutoPostBack property to true.
<asp:DropDownList ID="DropDownList1" runat="server" AutoPostBack="true" OnSelectedIndexChanged="dropdownlst_selectectchange">
</asp:DropDownList>

thank you,
regards

[sudharani]

Hello Praveen,
I have given the property AutoPostBack to true.still it is giving only first item in the list.I did the code in page_load event.
Is it require to add the code in betwwen if(!page.IsPostBack) condition .
reply me soon
Thank U