How to call other after Response.End();

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hi, i want to call Response.Redirect(Request.RawUrl); once i complete with below code(saveFile) so that all the selection get reset.

C#

private void saveFile(StringWriter sw, string fileName)
{
    Response.Clear();
    Response.Buffer = true;
    Response.ContentType = "application/vnd.ms-excel";
    string attachment = "attachment; filename=" + fileName + " " + DateTime.Now.ToString() + ".xsd";
    Response.AddHeader("content-disposition", attachment);
    Response.Charset = "";
    this.EnableViewState = false;

    Response.Write(sw.ToString());
    Response.End();

}

i want to reset the dynamic grid dropdown once the file is get saved.
help
thanks :)

Posted 28-Mar-12 1:43am

sawant parag

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bbirajdar · Answer 1 · 2012-03-28T02:01:00

Solution 1

No you cannot. Response.End() ends all responses for the page. So any code placed after that will not have any effect on the page.

Instead , remove the Response.End() and use only Response.Redirect(). It will achieve the result you want.

On other thoughts, you can programatically set the selectedIndex property of the dropdowns to default or clear the textboxes like this

C#

TextBox1.Text = String.Empty;
DropDownList1.SelectedIndex = -1;

Posted 28-Mar-12 2:01am

bbirajdar

Comments

sawant parag 28-Mar-12 8:11am

i am using the Dynamic genrated DropDown, my dropdown get binded on Onload event of the DropDown in grid view. so i am not able to make selectedindex as -1, if you any other method other then specified above let me know.

i used Response.Redirect(Request.RawUrl);
instead of // Response.End();

but i am not able to save the file, i am not able to achive the task .
help

bbirajdar 28-Mar-12 9:25am

When you are using the dynamically generated dropdown, then the selections will automatically get reset on click of submit button. You dont need to clear it.

And if can bind a dropdown to the data in codebehind at runtime, you should be able to set the selectedIndex to -1 at runtime as well.. Right ??

sawant parag 28-Mar-12 10:58am

i am using Dynamic Drop down of gridview , when i select one of the drop then it try to save the select item by using the above save function and in this save function i am ending the response as it is shown above.
i am not using the submit button so it is not getting cleared automatically.
as drop down is an gridview , i am not able to directly save its selectedIndex to -1.

bbirajdar 28-Mar-12 13:32pm

You are not explaining on which event of Dropdown you are trying to access the dropdown slected item.

Rework on your complete code

Here is the sample code for your reference .

http://webthingsconsidered.blogspot.in/2005/09/dropdownlist-inside-gridview-or.html

sawant parag 29-Mar-12 2:32am

hi below is my gridview control code.

<asp:GridView ID="grdModels" runat="server" AutoGenerateColumns="false" AllowSorting="true"
AllowPaging="true" HeaderStyle-CssClass="row0" Width="100%" HeaderStyle-VerticalAlign="Top"
RowStyle-CssClass="row1" RowStyle-VerticalAlign="Middle" DataKeyNames="Engine_Version,Model_Version,Model_Name"
OnSorting="grdModels_Sorting">
<columns>
<asp:TemplateField SortExpression="Model_Name" HeaderStyle-VerticalAlign="Top" HeaderText="Model Name">
<itemtemplate>
<asp:HyperLink runat="server" ID="HyperLink1" NavigateUrl='<%# "Model_ValidateFiles.aspx?EngineVersion=" + Eval("Engine_Version") + "&ModelName=" + Eval("Model_Name") + "&ModelVersion=" + Eval("Model_Version")+"&action=validate&modeltab=Model_Validate" %>'
Text='<%# Eval("Model_Name")%>'>

<asp:BoundField HeaderText="Model Version" DataField="Model_Version" SortExpression="Model_Version" />
<asp:BoundField HeaderText="Author" DataField="Created_By" SortExpression="Created_By" />
<asp:TemplateField HeaderStyle-VerticalAlign="Top" HeaderText="Create <BR> Date & Time"
SortExpression="Created_On">
<itemtemplate>
<%# Eval("Created_On", "{0:g}")%>

<asp:TemplateField HeaderStyle-VerticalAlign="Top" HeaderText="Publish Due <BR> Date & Time"
SortExpression="Published_Date" ItemStyle-Width="100">
<itemtemplate>
<%#Eval("Published_Date", "{0:g}")%>

<asp:BoundField HeaderText="Reviewer" DataField="Last_Reviewed_By" SortExpression="Last_Reviewed_By" />
<asp:TemplateField HeaderStyle-VerticalAlign="Top" HeaderText="Last Reviewed Date & Time"
SortExpression="Last_Reviewed_On" ItemStyle-Width="100">
<itemtemplate>
<%#Eval("Last_Reviewed_On","{0:g}")%>

<asp:BoundField HeaderText="ModelStatus" DataField="Model_Status" Visible="false"
SortExpression="Model_Status" />
<asp:TemplateField HeaderText="Actions">
<itemtemplate>
<asp:DropDownList ID="ddModelActions" runat="server" CssClass="largeSelectBoxContainer_1 handCursor"
Style="z-index: 999; padding: 4px;" AutoPostBack="true" OnLoad="ddModelActions_Load"
OnSelectedIndexChanged="ddModelActions_IndexChanged">

and below is the event on which i am trying to access the selected item .

protec

sawant parag 29-Mar-12 2:38am

protected void ddModelActions_Load(object sender, EventArgs e)
{
var ddl = (DropDownList)sender;
if (ddl.SelectedIndex == -1)
{

if (ViewState["IndexChanged"] == "No")
{
if ((!IsPostBack || ViewState["sortDirection"] != null) || (Session["viewButton"].ToString() == "yes"))
{
ddl.Items.Clear();
ddl.Items.Add(new ListItem("Select an Action"));
ddl.Items.Add(new ListItem("Manage Model"));
ddl.Items.Add(new ListItem("Manage Data"));
ddl.Items.Add(new ListItem("Download Response"));
ddl.Items.Add(new ListItem("Download Request"));
ddl.Items.Add(new ListItem("View History"));
ddl.Items.Add(new ListItem("Download Assemblies"));
}
}
}
else
{
if(!ddl.SelectedValue.Equals("Select an Action"))
{
string strSelectedValue = ddl.SelectedValue;
ViewState["SelectedValue"] = strSelectedValue;
ViewState["IndexChanged"] = "No";
}

}

}

protected void ddModelActions_IndexChanged(object sender, EventArgs e)
{
var ddl = (DropDownList)sender;

GridViewRow iRow = ((GridViewRow)(ddl.Parent.BindingContainer));

var engineVersion = grdModels.DataKeys[iRow.RowIndex].Values["Engine_Version"].ToString(); //((HyperLink)iRow.FindControl("HyperLink1")).Text;
var modelVersion = grdModels.DataKeys[iRow.RowIndex].Values["Model_Version"].ToString();//iRow.Cells[1].Text;
var modelName = grdModels.DataKeys[iRow.RowIndex].Values["Model_Name"].ToString(); //iRow.Cells[2].Text;

var queryString = "EngineVersion=" + engineVersion + "&ModelName=" + modelName + "&ModelVersion=" + modelVersion;
//var selectedValue = ddl.SelectedValue;
string selectedValue = ViewState["SelectedValue"] as string;
ddl.SelectedIndex = 0;

if (selectedValue == "Manage Model")
{
ViewState["IndexChanged"] = "Yes";
Response.Redirect("Model_ValidateFiles.aspx?" + queryString + "&action=validate&modeltab=Model_Validate");

}
else if (selectedValue == "Manage Data")
{
// Response.Redirect("InputFields.aspx?" + queryString);
}
else if (selectedValue == "Download Response")
{
ViewState["IndexChanged"] = "Yes";
int i = ddl.SelectedIndex;
ddl.SelectedIndex = -1;
//grdModels.DataKeys[iRow.RowIndex].Values["Action"] = ddl.SelectedValue[1];
ddl.ClearSelection();
GetResponse(modelName, modelVersion, engineVersion);

}
else if (selectedValue == "Download Request")
{
ViewState["IndexChanged"] = "Yes";
GetRequest(modelName, modelVersion, engineVersion);

}
else if (selectedValue == "View History")
{
ViewState["IndexChanged"] = "Yes";
Page.ClientScript.RegisterStartupScript(this.GetType(), "ViewHistory", "ddlClick();",true);
//Response.Write("<script language='javascript'>ddlClick();</script>");

}
else if (selectedValue == "Download Assemblies")
{
ViewState["IndexChanged"] = "Yes";
DownloadAssemblies(modelName, modelVersion, engineVersion);
// Page.ClientScript.RegisterStartupScript(this.GetType(), "Downloa