gridview asp.net c# onrowupdating - asp.net

Question

My problem is,when i click edit,textbox appears in all columns and i write ehatever i want to update,then i click on update button,the rows gets updated in the database,but on page it shows previous values.Please help
<Columns>
<asp:TemplateField HeaderText="Email ID">
<ItemTemplate>
<asp:Label ID="Label1" ReadOnly="true" runat="server" Text='<%#Eval("EmailID")%>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="TextBox1" runat="server" Text='<%#Eval("EmailID")%>'></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="First Name">
<ItemTemplate>
<asp:Label ID="Label2" runat="server" Text='<%#Eval("FirstName")%>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="TextBox2" runat="server" Text='<%#Eval("FirstName")%>'></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Last Name">
<ItemTemplate>
<asp:Label ID="Label3" runat="server" Text='<%#Eval("LastName")%>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="TextBox3" runat="server" Text='<%#Eval("LastName")%>'></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Password">
<ItemTemplate>
<asp:Label ID="Label4" runat="server" Text='<%#Eval("Password")%>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="TextBox4" runat="server" Text='<%#Eval("Password")%>'></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="CurrentLocation">
<ItemTemplate>
<asp:Label ID="Label5" runat="server" Text='<%#Eval("CurrentLocation")%>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="TextBox5" runat="server" Text='<%#Eval("CurrentLocation")%>'></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Mobile No.">
<ItemTemplate>
<asp:Label ID="Label6" runat="server" Text='<%#Eval("MobileNo")%>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="TextBox6" runat="server" Text='<%#Eval("MobileNo")%>'></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Address">
<ItemTemplate>
<asp:Label ID="Label7" runat="server" Text='<%#Eval("Address")%>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="TextBox7" runat="server" Text='<%#Eval("Address")%>'></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Gender">
<ItemTemplate>
<asp:Label ID="Label8" runat="server" Text='<%#Eval("Gender")%>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="TextBox8" runat="server" Text='<%#Eval("Gender")%>'></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:CommandField HeaderText="Edit" ShowEditButton="true"/>
code behind-
protected void GridView1_Edit(object sender, GridViewEditEventArgs e)
{
GridView1.EditIndex = e.NewEditIndex;
GridView1.DataBind();
}
protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
{
GridView1.EditIndex = -1;
GridView1.DataBind();
}
protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
TextBox ac = (TextBox)GridView1.Rows[e.RowIndex].FindControl("TextBox1");
TextBox a = (TextBox)GridView1.Rows[e.RowIndex].FindControl("TextBox2");
TextBox b = (TextBox)GridView1.Rows[e.RowIndex].FindControl("TextBox3");
TextBox c = (TextBox)GridView1.Rows[e.RowIndex].FindControl("TextBox4");
TextBox d = (TextBox)GridView1.Rows[e.RowIndex].FindControl("TextBox5");
TextBox k = (TextBox)GridView1.Rows[e.RowIndex].FindControl("TextBox6");
TextBox f = (TextBox)GridView1.Rows[e.RowIndex].FindControl("TextBox7");
TextBox g = (TextBox)GridView1.Rows[e.RowIndex].FindControl("TextBox8");
ru.EmailID1=ac.Text;
ru.FirstName1=a.Text;
ru.LastName1=b.Text;
ru.Password1=c.Text;
ru.Location=d.Text;
ru.MobileNo=k.Text;
ru.Address=f.Text;
ru.gender = g.Text;

Answer 1

You can set the EnableViewState property to True for each TextBox in your gridview. This will ensure that the values you entered in Edit mode are seen after page posts back. Also, you may change Eval to Bind, as Eval is read-only while Bind works both ways.

Answer 2

I believe your problem is that you are not updating the DataSource of the GridView, thus when you call DataBind() on the grid, it is using the data it has in the non-updated data source, thus the "old" values appear.
Instead, once you have successfully saved the changes to the database, then perform the logic of querying the database to build the data source and then re-bind the grid, like this:
SaveChangesToDatabase();
GridView1.DataSource = GetDataFromDatabase();
GridView1.DataBind();

Answer 3

you can use the Response.Redirect and insert it after your code.
protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
TextBox ac = (TextBox)GridView1.Rows[e.RowIndex].FindControl("TextBox1");
TextBox a = (TextBox)GridView1.Rows[e.RowIndex].FindControl("TextBox2");
TextBox b = (TextBox)GridView1.Rows[e.RowIndex].FindControl("TextBox3");
TextBox c = (TextBox)GridView1.Rows[e.RowIndex].FindControl("TextBox4");
TextBox d = (TextBox)GridView1.Rows[e.RowIndex].FindControl("TextBox5");
TextBox k = (TextBox)GridView1.Rows[e.RowIndex].FindControl("TextBox6");
TextBox f = (TextBox)GridView1.Rows[e.RowIndex].FindControl("TextBox7");
TextBox g = (TextBox)GridView1.Rows[e.RowIndex].FindControl("TextBox8");
ru.EmailID1=ac.Text;
ru.FirstName1=a.Text;
ru.LastName1=b.Text;
ru.Password1=c.Text;
ru.Location=d.Text;
ru.MobileNo=k.Text;
ru.Address=f.Text;
ru.gender = g.Text;
Response.Redirect("currentpage.aspx" + "?urlparam1=" + value1 + "&urlparam2=" + value2);

Answer 4

Try it:
protected void GridViewUser_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
try
{
var id = e.NewValues["Id"] + string.Empty;
var login = e.NewValues["Login"] + string.Empty;
var password = e.NewValues["Password"] + string.Empty;
Validate(false,login, password);
var dto = new UserDto();
dto.Id = Convert.ToInt32(id);
dto.Login = (login + string.Empty).Trim();
dto.Password = password;
_userBo.Save(dto);
GridViewUser.EditIndex = -1;
}
catch (Exception ex)
{
Core.Util.Util.ShowPopUpMsg(this, "Erro não esperado: " + ex.Message);
}
finally
{
FillGrid();
}
}