protected void GridView_RowCreated(object sender, GridViewRowEventArgs e)
{
// if we have zero data rows (but a dummy row), hide the grid view row
// and clear the controls off of that row so they don't cause binding errors
if (e.Row.RowType == DataControlRowType.DataRow &&
e.Row.RowIndex == 0 &&
LoadEmptyData)
{
e.Row.Visible = false;
e.Row.Controls.Clear();
}
//Following Logic records the correct row index of the
//item that was selected for editing
if ((dataKey != null) &&
(e.Row.RowType == DataControlRowType.DataRow) &&
!((e.Row.RowIndex == 0) && LoadEmptyData) &&
(this.DataKeys.Count > e.Row.RowIndex) &&
(this.DataKeys[e.Row.RowIndex][0] != null) &&
(this.DataKeys[e.Row.RowIndex][0].ToString() == dataKey.ToString()))
{
editIndexUsingDataKey = e.Row.RowIndex;
}
GetUpdatePanel.Update();
}
void TPMSFormView_ItemUpdated(object sender, FormViewUpdatedEventArgs e)
{
StringBuilder errorMessage = new StringBuilder();
Exception ex = e.Exception;
if (ex != null)
{
if (!(ex is ApplicationException))
{
while (ex != null)
{
;
}
ErrorLabel.Text = errorMessage.ToString();
}
e.ExceptionHandled = true;
e.KeepInEditMode = true;
}
else if (e.AffectedRows == 0)
{
e.KeepInEditMode = true;
//Set Error Message only if no ErrorMessage was assigned by DataSource Control
if (ErrorLabel.Text.Trim() == "")
{
ErrorLabel.Text = "Concurrency Error";
}
}
GetUpdatePanel.Update();
}
/// <summary>
/// Called when insert/update/edit/cancel link buttons are clicked on GridView
/// This method calls the insert method on ObjectDataSource and
/// enables button control after insert operation is completed
/// </summary>
/// <param name="sender">Sender</param>
/// <param name="e">GridView Command Event Arguments</param>
protected void GridView_RowCommand(object sender, GridViewCommandEventArgs e)
{
rowIndex = e.CommandSource is GridView ? -1 : ((GridViewRow)((Control)e.CommandSource).Parent.Parent).RowIndex;
ObjectDataSource dataSource = (ObjectDataSource)this.Parent.FindControl(this.DataSourceID);
if (dataSource != null)
{
if (e.CommandName == "Insert" && Page.IsValid)
{
try
{
//Following block of code is chekced for Exceptions
//because Insert() will throw an exception if insert ito DB fails
dataSource.Insert();
showButtons();
}
catch (Exception ex)
{
//Object Data Source throws this exception on Primary Key, Unique Key and Foriegn Key Voilations
//No Action is required here.
//This exception ensures that gridview footer row is displayed and and typed in data is not lost.
}
}
}
GetUpdatePanel.Update();
}
void addButton_Click(object sender, EventArgs e)
{
hideButtons();
//Refreshing Grid content before changing to insert mode
this.DataBind();
this.FooterRow.Visible = true;
GetUpdatePanel.Update();
}
/// <summary>
/// Called after user click edit control on page
/// Disable add button when editing a row
/// </summary>
/// <param name="sender">Sender</param>
/// <param name="e">GridView Edit Event Arguments</param>
protected virtual void GridView_RowEditing(object sender, GridViewEditEventArgs e)
{
//Remembering the DataKey of the row that is being changed to edit mode
//so that if the order of items in grid changes correct row can be identifed
dataKey = this.DataKeys[e.NewEditIndex][0];
this.hideButtons();
GetUpdatePanel.Update();
}
/// <summary>
/// Called when user select cancel button on editable row;
/// reenable add button when done editing row
/// </summary>
/// <param name="sender">Sender</param>
/// <param name="e">GridView Cancel Edit Event Arguments</param>
protected void GridView_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
{
this.showButtons();
if (this.ShowFooter == true)
{
this.ShowFooter = false;
}
GetUpdatePanel.Update();
}
/// <summary>
/// Call after database has been updated,
/// reenable add button when done editing row
/// </summary>
/// <param name="sender">Sender</param>
/// <param name="e">Grid View Updated Event</param>
protected void GridView_RowUpdated(object sender, GridViewUpdatedEventArgs e)
{
if (e.AffectedRows == 0)
{
e.KeepInEditMode = true;
}
else
{
this.showButtons();
}
GetUpdatePanel.Update();
}
void TPMSFormView_ItemInserted(object sender, FormViewInsertedEventArgs e)
{
StringBuilder errorMessage = new StringBuilder();
Exception ex = e.Exception;
if (ex != null)
{
if (!(ex is ApplicationException))
{
while (ex != null)
{
;
}
ErrorLabel.Text = errorMessage.ToString();
}
e.ExceptionHandled = true;
e.KeepInInsertMode = true;
}
GetUpdatePanel.Update();
}
void TPMSGridView_PreRender(object sender, EventArgs e)
{
//Disable buttons if GridView is disabed
if (!this.Enabled)
{
hideButtons();
}
else
{
if ((dataKey != null) && (this.EditIndex != -1))
{
this.EditIndex = editIndexUsingDataKey;
}
//Set Focus to footer row if it is visible
if ((this.FooterRow != null) && (this.FooterRow.Visible == true))
{
//If Ajax is used on page then following
//line of code will properly set focus to footer row
if (AjaxEnabledPage)
{
ScriptManager.GetCurrent(this.Page).SetFocus(FooterRow);
}
else
{
Page.SetFocus(FooterRow);
}
//Because Footer Row is visible gridview is in insert mode, so hiding AddButtons
hideButtons();
// Put header below datacontrols in footer row;
if (AddHeaderToFooter)
{
for (int i = 0; i < this.Columns.Count; i++)
{
string header = HeaderRow.Cells[i].Text;
if (header != null && header != string.Empty && header != " ")
{
Label label = new Label();
label.Text = "<center>" + header + "</center>";
label.ID = "label00" + i.ToString();
label.BackColor = System.Drawing.Color.Black;
label.ForeColor = System.Drawing.Color.White;
label.Width = Unit.Percentage(100.0);
label.Font.Bold = true;
label.Font.Name = "verdana";
FooterRow.Cells[i].Controls.Add(label);
}
}
}
}
else if (this.EditIndex > -1)
{
if (AjaxEnabledPage)
{
ScriptManager.GetCurrent(this.Page).SetFocus(this.Rows[this.EditIndex]);
}
else
{
Page.SetFocus(this.Rows[this.EditIndex]);
}
}
else if ((this.rowIndex != -1) && (this.Rows.Count > 0))
{
//Set Focus to the row that raised the post back event
if ((this.rowIndex < this.Rows.Count) &&
((this.Rows[this.rowIndex].RowState == DataControlRowState.Edit) || (this.rowIndex > 0)))
{
if (AjaxEnabledPage)
{
ScriptManager.GetCurrent(this.Page).SetFocus(this.Rows[this.rowIndex]);
}
else
{
Page.SetFocus(this.Rows[this.rowIndex]);
}
}
}
if (((this.FooterRow == null) || (this.FooterRow.Visible == false)) && (this.EditIndex < 0))
{
showButtons();
}
}
GetUpdatePanel.Update();
}