protected void YesButton_Click(object sender, System.EventArgs e)
{
SqlServer server = SqlServer.CurrentServer;
server.Connect();
SqlDatabase database = SqlDatabase.CurrentDatabase(server);
SqlTable table = database.Tables[Request["table"]];
if (table == null)
{
server.Disconnect();
// Table doesn't exist - break out and go to error page
Response.Redirect(String.Format("error.aspx?error={0}", 1002));
return;
}
// Delete the table
table.Remove();
server.Disconnect();
// Redirect to info page
Response.Redirect("tables.aspx?database=" + Server.UrlEncode(Request["database"]));
}
protected void CreateNewTableButton_Click(object sender, System.EventArgs e)
{
if (TableNameTextBox.Text.Length == 0)
{
ErrorCreatingLabel.Visible = true;
ErrorCreatingLabel.Text = "The new table name cannot be blank";
return;
}
SqlServer server = SqlServer.CurrentServer;
try
{
server.Connect();
}
catch (System.Exception ex)
{
//Response.Redirect("Error.aspx?errorPassCode=" + 2002);
Response.Redirect(String.Format("error.aspx?errormsg={0}&stacktrace={1}", Server.UrlEncode(ex.Message), Server.UrlEncode(ex.StackTrace)));
}
SqlDatabase database = SqlDatabase.CurrentDatabase(server);
ErrorCreatingLabel.Visible = false;
SqlTable table = server.Databases[database.Name].Tables[TableNameTextBox.Text];
// Ensure that the table doesn't exist yet
if (table == null)
{
// Now we have to do a quick check and see if it's a valid name for a table
// The only reliable way to do this is to try to create the table and see what happens
// In order to find out whether the table name is valid, we create a temporary dummy table
// and see what happens.
SqlTable dummyTable = null;
try
{
dummyTable = database.Tables.Add(TableNameTextBox.Text, new SqlColumnInformation[] { new SqlColumnInformation("Column1") });
}
catch (Exception ex)
{
// Disconnect and show error
if (dummyTable != null)
{
dummyTable.Remove();
}
server.Disconnect();
ErrorCreatingLabel.Visible = true;
ErrorCreatingLabel.Text = "There was an error creating the table:<br>" + Server.HtmlEncode(ex.Message).Replace("\n", "<br>");
return;
}
// Delete the dummy table
dummyTable.Remove();
server.Disconnect();
Response.Redirect(String.Format("editcolumn.aspx?database={0}&table={1}", Server.UrlEncode(database.Name), Server.UrlEncode(TableNameTextBox.Text)));
}
else
{
server.Disconnect();
ErrorCreatingLabel.Visible = true;
ErrorCreatingLabel.Text = "A table with this name already exists.";
}
}
protected void UpdateButton_Click(object sender, System.EventArgs e)
{
if (!IsValid)
{
return;
}
SqlServer server = SqlServer.CurrentServer;
server.Connect();
SqlDatabase database = SqlDatabase.CurrentDatabase(server);
// Parse user input and stick it into ColumnInfo
SqlColumnInformation columnInfo = new SqlColumnInformation();
columnInfo.Key = PrimaryKeyCheckbox.Checked;
columnInfo.Name = ColumnNameTextbox.Text;
columnInfo.DataType = DataTypeDropdownlist.SelectedItem.Text;
try {
columnInfo.Size = Convert.ToInt32(LengthTextbox.Text);
}
catch {
// Show error and quit
ErrorUpdatingColumnLabel.Visible = true;
ErrorUpdatingColumnLabel.Text = "Invalid input: Size must be an integer";
return;
}
columnInfo.Nulls = AllowNullCheckbox.Checked;
columnInfo.DefaultValue = DefaultValueTextbox.Text;
try {
columnInfo.Precision = Convert.ToInt32(PrecisionTextbox.Text);
}
catch {
// Show error and quit
ErrorUpdatingColumnLabel.Visible = true;
ErrorUpdatingColumnLabel.Text = "Invalid input: Precision must be an integer";
return;
}
try {
columnInfo.Scale = Convert.ToInt32(ScaleTextbox.Text);
}
catch {
// Show error and quit
ErrorUpdatingColumnLabel.Visible = true;
ErrorUpdatingColumnLabel.Text = "Invalid input: Scale must be an integer";
return;
}
columnInfo.Identity = IdentityCheckBox.Checked;
try {
columnInfo.IdentitySeed = Convert.ToInt32(IdentitySeedTextbox.Text);
}
catch {
// Show error and quit
ErrorUpdatingColumnLabel.Visible = true;
ErrorUpdatingColumnLabel.Text = "Invalid input: Identity seed must be an integer";
return;
}
try {
columnInfo.IdentityIncrement = Convert.ToInt32(IdentityIncrementTextbox.Text);
}
catch {
// Show error and quit
ErrorUpdatingColumnLabel.Visible = true;
ErrorUpdatingColumnLabel.Text = "Invalid input: Identity increment must be an integer";
return;
}
columnInfo.IsRowGuid = IsRowGuidCheckBox.Checked;
SqlTable table = database.Tables[Request["table"]];
// First check if the table exists or not
// If it doesn't exist, that means we are adding the first column of a new table
// If it does exist, then either we are adding a new column to an existing table
// or we are editing an existing column in an existing table
if (table == null)
{
// Table does not exist - create a new table and add the new column
try {
SqlColumnInformation[] columnInfos = new SqlColumnInformation[1] {
columnInfo
};
table = database.Tables.Add(Request["table"], columnInfos);
}
catch (Exception ex) {
// If the table was somehow created, get rid of it
table = database.Tables[Request["table"]];
if (table != null)
{
table.Remove();
}
// Show error and quit
ErrorUpdatingColumnLabel.Visible = true;
ErrorUpdatingColumnLabel.Text = "The following error occured while trying to apply the changes.<br>" + Server.HtmlEncode(ex.Message).Replace("\n", "<br>");
server.Disconnect();
return;
}
}
else
{
// Table does exist, do further check
// If original name is blank that means it is a new column
string originalColumnName = Request["column"];
if (originalColumnName == null || originalColumnName.Length == 0)
{
try {
table.Columns.Add(columnInfo);
}
catch (Exception ex) {
// Show error and quit
ErrorUpdatingColumnLabel.Visible = true;
ErrorUpdatingColumnLabel.Text = "The following error occured while trying to apply the changes:<br>" + Server.HtmlEncode(ex.Message).Replace("\n", "<br>");
server.Disconnect();
return;
}
}
else
{
// If we get here that means we are editing an existing column
// Simply set the column info - internally the table gets recreated
try {
table.Columns[originalColumnName].ColumnInformation = columnInfo;
}
catch (Exception ex) {
// Show error and quit
ErrorUpdatingColumnLabel.Visible = true;
ErrorUpdatingColumnLabel.Text = "The following error occured while trying to apply the changes.<br>" + Server.HtmlEncode(ex.Message).Replace("\n", "<br>");
server.Disconnect();
return;
}
}
}
server.Disconnect();
// If we get here then that means a column was successfully added/edited
Response.Redirect(String.Format("columns.aspx?database={0}&table={1}", Server.UrlEncode(Request["database"]), Server.UrlEncode(Request["table"])));
}
