multiple dropdownlists in gridview with editable in asp.net C#

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Hi,
I have a gridview with two dropdowns country and state when i click on edit button the dropdowns selected values should be displayed on edit mode please give some samples or code..

Thanks in Advance..
Raghu.

Posted 14-Mar-13 22:14pm

Madhugundi

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_Amy · Answer 1 · 2013-03-14T22:22:00

Solution 1

Go to your RowDataBound Event of GridView, Find the DropDownList which is in EditItemTemplate and bind the data and set the selected value there.
Try this:

C#

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        DropDownList ddlCountry = e.Row.FindControl("ddlCountry") as DropDownList;

        if (ddlCountry != null){
            // Write your code to bind dropdownlist and set it's selected value here.
        }
    }
}

OR
See and example here for Binding DropDownList in GridView RowEditing Command[^].

--Amit

Posted 14-Mar-13 22:22pm

_Amy

Updated 14-Mar-13 22:23pm

v2

Comments

Madhugundi 15-Mar-13 4:37am

its working fine for one dropdown list but i need this to multiple dropdowns

_Amy 15-Mar-13 4:39am

No Problem. Based on selected value of Country dropdownlist you need to fetch the data for states dropdownlist and then bind the state dropdownlist with filtered data. And then try to set the selected value.

--Amit

Madhugundi 15-Mar-13 4:42am

please give sample code i tried hard but not getting

_Amy 15-Mar-13 4:43am

Where you are having the data for states? In Session or DataBase?

Madhugundi 15-Mar-13 4:43am

database

_Amy 15-Mar-13 4:46am

Write a command to get the data based on selected country and store it in datatable. Now bind the state's dropdownlist with this datatable. And then set the selected value for the state's dropdownlist.

Madhugundi 15-Mar-13 4:45am

this is my code please look at

if (projectName != null)
{
projectName.DataTextField = MasterData.HXMasterData.HXProject.ProjectNameColumn.ColumnName;
projectName.DataValueField = MasterData.HXMasterData.HXProject.ProjectIdColumn.ColumnName;
projectName.DataSource = MasterData.HXMasterData.HXProject;
projectName.DataBind();
projectName.Items.FindByText((e.Row.FindControl("lblProjectNameDrop") as Label).Text).Selected = true;

}
DropDownList ddlcomponent = (DropDownList)e.Row.FindControl("ddlEditComponentName");
if (ddlcomponent != null)
{
ddlcomponent.Items.FindByText((e.Row.FindControl("lblComponentNameDrop") as Label).Text).Selected = true;

}

_Amy 15-Mar-13 4:47am

Follow my above comment. It's the same thing which I am telling about.

Madhugundi 15-Mar-13 4:48am

i am getting error on ddlcomponent dropdown like
Object reference not set to an instance of an object.

Madhugundi 15-Mar-13 4:49am

i am also doing same in my code please look at

_Amy 15-Mar-13 4:52am

Try this:
if (ddlcomponent != null)
{
ddlcomponent.Items.FindByText(projectName.Text).Selected = true;
}

Madhugundi 15-Mar-13 4:51am

if u find any link that contains multiple dropdownlist in gridview with editable please give me that link

_Amy 15-Mar-13 4:53am

Not required. You are going good. Try to debug the code. Put a BreakPoint and check which control/value is null.

Madhugundi 15-Mar-13 4:59am

i am getting the value of label i.e (e.Row.FindControl("lblComponentNameDrop") as Label).Text but ddlcomponent is not able to find the label text where i am doing mistake please look at

_Amy 15-Mar-13 5:05am

See you code. You are finding ddlEditComponentName. Check and tell me.

Madhugundi 15-Mar-13 5:12am

<edititemtemplate>
<asp:Label ID="lblcomponentNameDrop" runat="server" Text='<%# Bind("ComponentName")%>' Visible = "false">
<asp:DropDownList ID="ddlEditComponentName" runat="server" DataTextField="ComponentName" Width="40%" DataValueField="ComponentId" >
<asp:RequiredFieldValidator ID="rfvEditComponenttName" runat="server" ErrorMessage="Please Select Component Name"
ControlToValidate="ddlEditComponentName" ValidationGroup="updateValidation">

Dhritirao's · Answer 2 · 2013-03-14T22:59:00

Solution 2

Hi,

i think it may be help ful for u

Editable GridView in ASP.NET 2.0[^]

Posted 14-Mar-13 22:59pm

Dhritirao's

Updated 14-Mar-13 23:01pm

v2

Comments

Madhugundi 15-Mar-13 5:02am

thanks to consider my post please look at my post i am searching for multiple dropdownlists on gridview with editable

Dhritirao's 15-Mar-13 5:05am

in that link also there are two drop down in editable only

Madhugundi 15-Mar-13 5:23am

this is not suitable for my post i checked this code only one dropdownlist selected value only selected on editmode another one is not selected please look at code