Develop Reference

How To select Particular Cell Value in Grid View

I want to select Particular Cell value and will use to Bind Controls But i am Not able to select Cell Value
Its not retrieving data
ASPX Code
<asp:GridView ID="grdLogedUserDetails" OnRowDeleting="grdLogedUserDetails_RowDeleting" OnRowDataBound="grdLogedUserDetails_RowDataBound"
runat="server" Style="width: 100%; text-align: center" OnRowCommand="grdLogedUserDetails_RowCommand"
class="table table-striped table-bordered" AutoGenerateColumns="false" datakeynames="Ref_ID">
<Columns>
<asp:TemplateField HeaderText="Process No">
<ItemTemplate>
<asp:Label runat="server" Text='<%# Bind("Ref_ID") %>' ID="lblRef_ID"></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Company">
<ItemTemplate>
<asp:Label runat="server" Text='<%# Bind("CompanyName") %>' ID="lblCompanyName"></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Division">
<ItemTemplate>
<asp:Label runat="server" Text='<%# Bind("DivisionName") %>' ID="lblDivisionName"></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Delete">
<ItemTemplate>
<asp:ImageButton ID="imgDel" runat="server" ImageUrl="~/Images/delete.png" AlternateText="Delete" CommandName="Delete" />
</ItemTemplate>
<ItemStyle Width="100px" />
</asp:TemplateField>
<asp:TemplateField HeaderText="Select">
<ItemTemplate>
<asp:ImageButton ID="imgSel" runat="server" ImageUrl="~/Images/edit-icon.png" AlternateText="Select" CommandName="Select" />
</ItemTemplate>
<ItemStyle Width="100px" />
</asp:TemplateField>
C#
protected void grdLogedUserDetails_RowCommand(object sender, GridViewCommandEventArgs e)
{
int rowIndex = Convert.ToInt32(e.CommandArgument);
//Reference the GridView Row.
GridViewRow row = grdLogedUserDetails.Rows[rowIndex];
//Access Cell values.
int RefID= int.Parse(row.Cells[0].Text);
string Company= row.Cells[1].Text;
string Division= row.Cells[2].Text;
}
protected void grdLogedUserDetails_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
//Access Cell values.
var RefId = int.Parse(e.Row.Cells[0].Text); // Error Input string is not in correct Formate
string Comany= e.Row.Cells[1].Text;
string Division= e.Row.Cells[2].Text;
}
}
While Debugging I can see Error Like :
"Input string is not in correct Format" Where i am doing wrong
My Table Structure
________________________________________
Ref_ID| CompanyName | DivisionName |
______|_______________|_________________|
6 | Company | Sales |
8 | Company | Sales |
14 | Company | Sales |
______|_______________|_________________|
RefID i have taken as "int" and CompanyName and DivisionName "string" so where i my input string is in wrong format,
Where i am doing wrong Please suggest me on same

The rowcommand event does not trigger rowindexed change unless you have Command="Select" but you DO HAVE Command="Select". However, you don't have a CommandArugment.
However, since you do have command=Select, then move your code to SelectedIndexChanged. The issue is you can't get/grab the row from the "row" command event since the row has not changed. The rowcommand event fires before SelectedIndexChanged. And as noted, unless you use a special command (delete or select) then SelectedIndexChanged does NOT fire.
So rowindex will NOT have been set in the row command event. However, this will mean that for your select button (and delete) your code will be (can be) in rowindexchanged "if" you use say select (or "delete") for the command. if you use a custom command name, then rowindexedchanged does NOT fire.
You can continue to use rowcommand, but you need the CommandArugment to pass either the PK of the row, or the index of the row.
So you have two choices here. (actually 3).
You can set the value of CommandArugment of that button.
Either to the PK, or you can use this
CommandArgument ='<%# Container.DataItemIndex%>'
I note that in your command settings, you are NOT setting the CommandArugment - you have to set it in your markup. The above expression will return the index into the grid.
You can move your code to rowindexchanged.
However, there is a 3rd choice. You CAN GET the rowindex in rowcommand. So from the depths of hell, you can use this stunning whopper insane of a statement:
If e.CommandName = "MySelect" Then
' now get row.
Dim gvRow As GridViewRow = CType(CType(e.CommandSource, Control).NamingContainer, GridViewRow)
Debug.Print("row index = " & gvRow.DataItemIndex)
Dim MyLabel As Label = gvRow.FindControl("HotelName")
Debug.Print("Value ref id = " & MyLabel.Text)
End If
Note VERY careful:
For the templated fields - we use find control. For non tempalted fields, then you can reference by cell.
Now that super award winning ugly way to get the row in row command?
In C# it will look like this:
{
GridViewRow gvRow = (GridViewRow)(Control)e.CommandSource.NamingContainer;
}
So, you have to use above, or as noted, move your code to SelectedIndexChanged.
Since you only have a select and delete button, then I would suggest SelectedIndexChanged. But if you were to say introduce another button - then you would not want to use Select or Delete, but a custom command name of your choosing (say CommandName="MyViewer"). In that case, then SelectedIndexChanged will not fire. But then you would have a means to determine which button was clicked upon (beyond the need of select and delete commands).
So in summary:
You have about 3+ ways to do this.
Keep in mind that in row command, the selected index event has NOT yet fired.
Keep in mind that if you use a custom row command name, then selected index WILL NOT fire.
Keep in mind that you can pick up the selected row with that award winning ugly line of code.
Keep in mind that you can't use cells() collection for your custom templated columns - so use find control.
Keep in mind that selectedindex in row command event has NOT changed nor fired yet.
Since you ARE using select, then you have a choice of row command event, or selectedindex changed event - they will both fire in your case.

The problem is that the cell does not contain any text, but a Label lblRef_ID. So you need to access the label, not the cell value.
var label = e.Row.FindControl("lblRef_ID") as Label;
var RefId = int.Parse(label.Text);

Hidden Field Value not finding value

I have an hiddenfield field in my gridview but the code behind cant get its value maybe someone could find the problem.
HTML:
<asp:TemplateField HeaderText="TweetID" Visible="false">
<ItemTemplate>
<asp:HiddenField ID="TweetID" runat="server" Value='<%#Eval("TweetID") %>' />
</ItemTemplate>
</asp:TemplateField>
.cs:
protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
int index = Convert.ToInt32(e.RowIndex);
HiddenField tid = GridView1.Rows[index].FindControl("TweetID") as HiddenField;
//Response.Write(tid.Value);
TweetHelper.RemoveTweet( Convert.ToInt32(tid.Value), 1);
}
by the way the response writes nothing.

Based on your code above what you are doing is overkill.
Either make TweetID a Gridview.DataKey.
Or if that's not an option, convert your Delete button to a template field and add TweetID as a CommandArgument to the Delete button.

Your code should work fine.However another way to find the control is
GridViewRow row = GridView1.Rows[e.RowIndex];
HiddenField hdn = (HiddenField)row.FindControl("TweetID");
string value = hdn.Value;
or simply
var tweetid = ((HiddenField)GridView1.Rows[e.RowIndex].FindControl("TweetID")).Value;

getting GridView data from buttonField press?

So I have a GridView for a C# web application, that has a Buttonfield, and when that button is clicked, I need to get the value of one of the fields for that row and store it in a variable for processing in some way.
However, neither the GridView nor the ButtonField seem to possess any means of doing this.
Can anyone recommend a way of getting data from a GridView, or if this is not possible, a different type of view that does offer this functionality, while still displaying a whole table (eg, not a DetailsView)

You can Check this link: https://msdn.microsoft.com/en-us/library/bb907626(v=vs.140).aspx.
Define the CommandName of the Button.
In the GridView Define the RowCommand Event and Check the CommandName.
Get the Index of the Row.
Get the Column with GridView.Rows[index](columnIndex)

If you are using asp:TemplateField like shown below then you can access the row content using RowCommand
Markup
<asp:TemplateField>
<ItemTemplate>
<asp:Label ID="lblCode" runat="server" Text='<%# Eval("CustomerID") %>'>
</asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:ButtonField CommandName="AddCode" Text="Add New"/>
Code
protected void gvwSearch_RowCommand(object sender, GridViewCommandEventArgs e)
{
if(e.CommandName == "AddCode")
{
var clickedButton = e.CommandSource as Button;
var clickedRow = clickedButton.NamingContainer as GridViewRow;
var rows_lblCode = clickedRow.FindControl("lblCode") as Label;
// now you can acccess all the label properties. For example,
var temp = rows_lblCode.Text;
}
}

Pass Gridview one Row TextBox value To Another Row Textbox Value

I have Gridview with 10 Rows each row have 2 columns which is Textbox and Checkbox.
what i have to do is have to enter textbox Value as 1000 and i Clicked the Checkbox at first Row then value must go to Textbox of Second row and i clicked checkbox of Second Row then value must be go to third row of Textbox and so on.
i tried this,
protected void txtintroId_TextChanged(object sender, EventArgs e)
{
TextBox txt = (TextBox)sender;
GridViewRow grid = ((GridViewRow)txt.Parent.Parent.Parent);
TextBox txtIntro = (TextBox)txt.FindControl("txtintroId");
}
here i get the 1st row Value but How do i pass this to second Row.
Assist me

Here is full working code(as per your requirement )
Create a gridview like this
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:TextBox ID="TextBox1" runat="server" Text='<%#Eval("txtcolumn") %>'></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<ItemTemplate>
<asp:CheckBox ID="CheckBox1" runat="server" AutoPostBack="True" OnCheckedChanged="CheckBox2_CheckedChanged" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
Add a function in code behind C#
protected void CheckBox1_CheckedChanged(object sender, EventArgs e)
{
int rowNo=0;
foreach (GridViewRow GV1 in GridView1.Rows)
{
rowNo++;//
if (rowNo < GridView1.Rows.Count) //Checking that is this last row or not
{
//if no
CheckBox chkbx= (CheckBox)GV1.FindControl("CheckBox1");
TextBox curenttxtbx = (TextBox)GV1.FindControl("TextBox1");
if (chkbx.Checked == true )
`{
int nextIndex = GV1.RowIndex + 1;//Next row
TextBox txtbx = (TextBox)GridView1.Rows[nextIndex].FindControl("TextBox1");
txtbx.Text = curenttxtbx.Text;
}
}
//if yes
else
{
//For last row
//There is no next row
}
}
}
And i used this data table as data source
DataTable table = new DataTable();
table.Columns.Add("txtcolumn", typeof(string));
table.Rows.Add("1");
table.Rows.Add("32");
table.Rows.Add("32");
table.Rows.Add("32");
table.Rows.Add("3");
table.Rows.Add("32");
table.Rows.Add("32");
I tested this code it is working as per your requirement. (And SORRY for this bad formatting. i will do it later or please some body correct the formating :))

ASP .NET accessing data of Gridview row and invoke procedure for a buttonfield coulmn row

I am creating a simple web application.
But I am facing a problem with a Gridview that displays some data from the database in a column and i have another column with a buttons where I want to invoke a stored procedure.
However the stored procedure takes as input the value of the corresponding data in the other column, so my question is how to access the value of this column and pass it to the action listener of the corresponding buttonfield?

You could set it up as a Template field in the aspx page and pass in the Value of the field you want as an argument:
<asp:GridView ID="grd" OnRowCommand="grd_RowCommand">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:LinkButton ID="btn" runat="server" Text="Click" CommandName="Click" CommandArgument='<%#Eval("FirstColumnFieldName") %>'/>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
And then in your code behind, you could do this:
protected void grd_RowCommand(object sender, GridViewCommandEventArgs e)
{
switch (e.CommandName)
{
case "Click":
{
string FirstColumnValue = e.CommandArgument.ToString();
hiddenfield.Value = FirstColumnValue;
break;
}
default:
break;
}
}
You can find more solutions here