public void GenerateLemma()
{
string lemma = "";
lemma += "lemma L1(q: seq<int>, i: nat, q0: seq<int>, min: int, max: int)\n";
lemma += indentation + "requires Inv(q, i, min, max)\n";
lemma += indentation + "requires i == |q|\n";
lemma += indentation + "ensures MinElement(min, q)\n";
lemma += indentation + "ensures MaxElement(max, q)\n";
assertiveToolDS ds = new assertiveToolDS();
ds.Name = "MinAndMax";
ds.AddArgument(new Variable("q", "seq<int>"));
ds.AddLoclVar(new Variable("i", "nat"));
ds.AddLoclVar(new Variable("q0", "seq<int>"));
ds.AddRetValue(new Variable("min", "int"));
ds.AddRetValue(new Variable("max", "int"));
ds.AddPreCond("0 < |q|");
ds.AddPostCond("MinElement(min, q)");
ds.AddPostCond("MaxElement(max, q)");
ds.strengthenPostCond("Inv(q, i, min, max)");
ds.strengthenPostCond("i == |q|");
string name;
name = "L1";
ds.StrengthLemma.Name = name;
Assert.AreEqual(lemma, ds.generateStrengthLemma());
}
public static assertiveToolDS initDs5()
{
assertiveToolDS ds = new assertiveToolDS();
ds.Name = "MM2'";
ds.AddArgument(new Variable("q", "seq<int>"));
ds.AddArgument(new Variable("i0", "nat"));
ds.AddArgument(new Variable("min0", "int"));
ds.AddArgument(new Variable("max0", "int"));
ds.AddRetValue(new Variable("i", "nat"));
ds.AddRetValue(new Variable("min", "int"));
ds.AddRetValue(new Variable("max", "int"));
ds.AddPreCond("0 < |q| && min0 == q[0] && max0 == q[0] && i0 == 1");
ds.AddPostCond("Inv(q, i, min, max) && i == |q|");
ds.weakenPreCond("Inv(q, i, min, max)");
string name;
name = "MM3";
ds.NewMethod.Name = name;
name = "L3";
ds.WeakLemma.Name = name;
name = "L2";
ds.StrengthLemma.Name = name;
return(ds);
}
public void GenerateMethod()
{
string method = "";
method += "method MM1(q: seq<int>) returns(i: nat, q0: seq<int>, min: int, max: int)\n";
method += indentation + "requires 0 < |q|\n";
method += indentation + "ensures Inv(q, i, min, max)\n";
method += indentation + "ensures i == |q|\n";
assertiveToolDS ds = new assertiveToolDS();
ds.Name = "MinAndMax";
ds.AddArgument(new Variable("q", "seq<int>"));
ds.AddLoclVar(new Variable("i", "nat"));
ds.AddLoclVar(new Variable("q0", "seq<int>"));
ds.AddRetValue(new Variable("min", "int"));
ds.AddRetValue(new Variable("max", "int"));
ds.AddPreCond("0 < |q|");
ds.AddPostCond("MinElement(min, q)");
ds.AddPostCond("MaxElement(max, q)");
ds.strengthenPostCond("Inv(q, i, min, max)");
ds.strengthenPostCond("i == |q|");
string name;
name = "MM1";
ds.NewMethod.Name = name;
Assert.AreEqual(method, ds.generateMethod());
}
public static assertiveToolDS initDs4()
{
assertiveToolDS ds = new assertiveToolDS();
ds.Name = "MinAndMax";
ds.AddArgument(new Variable("q", "seq<int>"));
ds.AddLoclVar(new Variable("i", "nat"));
ds.AddLoclVar(new Variable("q'", "seq<int>"));
ds.AddLoclVar(new Variable("j'", "int"));
ds.AddLoclVar(new Variable("k'", "nat"));
ds.AddRetValue(new Variable("min", "int"));
ds.AddRetValue(new Variable("max", "int"));
ds.AddPreCond("0 < |q|");
ds.AddPostCond("MinElement(min, q)");
ds.AddPostCond("MaxElement(max, q)");
ds.strengthenPostCond("Inv(q, i, min, max)");
ds.strengthenPostCond("Inv(q, i, min, max)");
string name;
name = "MM1";
ds.NewMethod.Name = name;
name = "L1";
ds.StrengthLemma.Name = name;
return(ds);
}
public void IdenticalValues()
{
string body = "";
body += indentation + "var i : nat;\n";
body += indentation + "assert 0 < |q|;\n";
body += indentation + "i, min, max := MM1(q, a, b);\n";
body += indentation + "assert Inv(q, i, min, max);\n";
body += indentation + "L1(q, a, b, i, min, max);\n";
body += indentation + "assert MinElement(min, q);\n";
body += indentation + "assert MaxElement(max, q);\n";
string lemma = "";
lemma += "lemma L1(q: seq<int>, a: nat, b: nat, i: nat, min: int, max: int)\n";
lemma += indentation + "requires Inv(q, i, min, max)\n";
lemma += indentation + "ensures MinElement(min, q)\n";
lemma += indentation + "ensures MaxElement(max, q)\n";
string method = "";
method += "method MM1(q: seq<int>, a: nat, b: nat) returns(i: nat, min: int, max: int)\n";
method += indentation + "requires 0 < |q|\n";
method += indentation + "ensures Inv(q, i, min, max)\n";
assertiveToolDS ds = new assertiveToolDS();
ds.Name = "MinAndMax";
ds.AddArgument(new Variable("q", "seq<int>"));
ds.AddArgument(new Variable("a", "nat"));
ds.AddArgument(new Variable("b", "nat"));
ds.AddArgument(new Variable("b", "nat"));
ds.AddLoclVar(new Variable("i", "nat"));
ds.AddLoclVar(new Variable("i", "nat"));
ds.AddRetValue(new Variable("min", "int"));
ds.AddRetValue(new Variable("min", "int"));
ds.AddRetValue(new Variable("max", "int"));
ds.AddPreCond("0 < |q|");
ds.AddPreCond("0 < |q|");
ds.AddPostCond("MinElement(min, q)");
ds.AddPostCond("MaxElement(max, q)");
ds.AddPostCond("MaxElement(max, q)");
ds.strengthenPostCond("Inv(q, i, min, max)");
ds.strengthenPostCond("Inv(q, i, min, max)");
ds.strengthenPostCond("Inv(q, i, min, max)");
string name;
name = "MM1";
ds.NewMethod.Name = name;
name = "L1";
ds.StrengthLemma.Name = name;
Assert.AreEqual(body, ds.generateBody());
Assert.AreEqual(lemma, ds.generateStrengthLemma());
Assert.AreEqual(method, ds.generateMethod());
}
public static void go(assertiveToolDS ds)
{
//Console.WriteLine(ds.generatePMethod());
//Console.WriteLine("");
Console.WriteLine(ds.generateBody());
Console.WriteLine(ds.generateMethod());
Console.WriteLine("");
Console.WriteLine(ds.generateWeakLemma());
Console.WriteLine("");
Console.WriteLine(ds.generateStrengthLemma());
}
public static assertiveToolDS initDs1()
{
assertiveToolDS ds = new assertiveToolDS();
ds.Name = "MinAndMax'";
ds.AddArgument(new Variable("q", "seq<int>"));
//ds.AddArgument(new Variable("j0", "nat"));
//ds.AddArgument(new Variable("min", "int"));
//ds.AddArgument(new Variable("max", "int"));
//ds.AddArgument(new Variable("a", "nat"));
//ds.AddArgument(new Variable("b", "int"));
ds.AddLoclVar(new Variable("i", "nat"));
//ds.AddLoclVar(new Variable("q0", "seq<int>"));
//ds.AddLoclVar(new Variable("j0", "int"));
//ds.AddLoclVar(new Variable("k0", "nat"));
ds.AddRetValue(new Variable("min", "int"));
ds.AddRetValue(new Variable("max", "int"));
ds.AddPreCond("0 < |q|");
//ds.AddPreCond("|q| < 100");
ds.AddPostCond("MinElement(min, q)");
ds.AddPostCond("MaxElement(max, q)");
//ds.AddPostCond("q != null");
ds.strengthenPostCond("Inv(q, i, min, max)");
ds.strengthenPostCond("i == |q|");
//ds.weakenPreCond("|q| < 0");
string name;
name = "MM1";
ds.NewMethod.Name = name;
name = "L1";
ds.WeakLemma.Name = name;
name = "L2";
ds.StrengthLemma.Name = name;
return(ds);
}
public void GenerateBody()
{
string body = "";
body += indentation + "var i : nat;\n";
body += indentation + "var q' : seq<int>;\n";
body += indentation + "assert 0 < |q|;\n";
body += indentation + "i, q', min, max := MM1(q);\n";
body += indentation + "assert Inv(q, i, min, max);\n";
body += indentation + "assert i == |q|;\n";
body += indentation + "L1(q, i, q', min, max);\n";
body += indentation + "assert MinElement(min, q);\n";
body += indentation + "assert MaxElement(max, q);\n";
assertiveToolDS ds = new assertiveToolDS();
ds.Name = "MinAndMax";
ds.AddArgument(new Variable("q", "seq<int>"));
ds.AddLoclVar(new Variable("i", "nat"));
ds.AddLoclVar(new Variable("q'", "seq<int>"));
ds.AddRetValue(new Variable("min", "int"));
ds.AddRetValue(new Variable("max", "int"));
ds.AddPreCond("0 < |q|");
ds.AddPostCond("MinElement(min, q)");
ds.AddPostCond("MaxElement(max, q)");
ds.strengthenPostCond("Inv(q, i, min, max)");
ds.strengthenPostCond("i == |q|");
string name;
name = "MM1";
ds.NewMethod.Name = name;
name = "L1";
ds.StrengthLemma.Name = name;
Assert.AreEqual(body, ds.generateBody());
}
private void button_ok_Click(object sender, EventArgs e)
{
try
{
assertiveToolDS dafnyCreate = new assertiveToolDS();
dafnyCreate.Name = p.currentMethod.FullName;
if (this.methodName.Text == string.Empty)
{
MessageBox.Show("Please enter Method Name.", "Empty input", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return;
}
dafnyCreate.NewMethod.Name = this.methodName.Text;
//Add var names and types
bool isFound = false;
for (int i = 1; i <= this.index; i++)
{
string t = String.Empty;
string n = String.Empty;
foreach (Control x in this.Controls)
{
if (x is TextBox && x.Name.StartsWith("NameBox" + i))
{
n = x.Text;
}
if (x is TextBox && x.Name.StartsWith("TypeBox" + i))
{
t = x.Text;
}
if (n != String.Empty && t != String.Empty)
{
break;
}
}
if (n == String.Empty)
{
continue;
}
else
{
isFound = true;
Variable newVar = new Variable(n, t);
dafnyCreate.AddLoclVar(newVar);
}
}
if (!isFound)
{
MessageBox.Show("Please enter at least one variable and type.", "Empty input", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return;
}
if (this.pre_cond.Enabled)
{
if (pre_cond.Text == string.Empty)
{
MessageBox.Show("Please enter preCondition.", "Empty input", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return;
}
if (preCondName.Text == string.Empty)
{
MessageBox.Show("Please enter Lema name.", "Empty input", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return;
}
dafnyCreate.weakenPreCond(pre_cond.Text);
dafnyCreate.WeakLemma.Name = this.preCondName.Text;
}
if (this.post_cond.Enabled)
{
if (post_cond.Text == string.Empty)
{
MessageBox.Show("Please enter preCondition.", "Empty input", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return;
}
if (postLemaName.Text == string.Empty)
{
MessageBox.Show("Please enter Lema name.", "Empty input", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return;
}
dafnyCreate.strengthenPostCond(post_cond.Text);
dafnyCreate.StrengthLemma.Name = this.postLemaName.Text;
}
// Add parser
try
{
// DafnyCodeParser p = new DafnyCodeParser();
// p.parse_file(dte.ActiveDocument.FullName, dafnyCreate.Name);
//vars:
List <String> varNames = p.get_var_names();
List <String> varTypes = p.get_var_types();
for (int i = 0; i < varNames.Count; i++)
{
Variable arg1 = new Variable(varNames[i], varTypes[i]);
dafnyCreate.AddArgument(arg1);
}
//ret:
List <String> retNames = p.get_ret_names();
List <String> retTypes = p.get_ret_types();
for (int i = 0; i < retNames.Count; i++)
{
Variable arg1 = new Variable(retNames[i], retTypes[i]);
dafnyCreate.AddRetValue(arg1);
}
//precond
List <String> precond = p.get_req();
for (int i = 0; i < precond.Count; i++)
{
dafnyCreate.AddPreCond(precond[i]);
}
//post
List <String> postcond = p.get_ens();
for (int i = 0; i < postcond.Count; i++)
{
dafnyCreate.AddPostCond(postcond[i]);
}
}
catch
{
MessageBox.Show("Error in parsing the file.", "Parser Exeption", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
this.Close();
return;
}
// insert text
string pre_and_post = String.Empty;
if (pre_cond.Enabled)
{
pre_and_post += "\n\n" + dafnyCreate.generateWeakLemma();
}
if (post_cond.Enabled)
{
pre_and_post += "\n\n" + dafnyCreate.generateStrengthLemma();
}
toInsert.Insert("\n{\n" + dafnyCreate.generateBody() + "}\n\n" + dafnyCreate.generateMethod() + pre_and_post + "\n");
this.Close();
}
catch
{
MessageBox.Show("Unexpected Exeption occurred during the execution.", "Unexpected Exeption", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
this.Close();
return;
}
}
public void args0WithSameInRet()
{
string body = "";
body += indentation + "i, min, max := i0, min0, max0;\n";
body += indentation + "assert 0 < |q| && min == q[0] && max == q[0] && i == 1;\n";
body += indentation + "L3(q, i, min, max);\n";
body += indentation + "assert Inv(q, i, min, max);\n";
body += indentation + "assert i > min && max < q;\n";
body += indentation + "i, min, max := MM3(q, i, min, max);\n";
body += indentation + "assert Inv(q, i, min, max) && i == |q|;\n";
string lemma = "";
lemma += "lemma L3(q: seq<int>, i: nat, min: int, max: int)\n";
lemma += indentation + "requires 0 < |q| && min == q[0] && max == q[0] && i == 1\n";
lemma += indentation + "ensures Inv(q, i, min, max)\n";
lemma += indentation + "ensures i > min && max < q\n";
string method = "";
method += "method MM3(q: seq<int>, i0: nat, min0: int, max0: int) returns(i: nat, min: int, max: int)\n";
method += indentation + "requires Inv(q, i0, min0, max0)\n"; //@@@
method += indentation + "requires i0 > min0 && max0 < q\n"; //@@@
method += indentation + "ensures Inv(q, i, min, max) && i == |q|\n";
assertiveToolDS ds = new assertiveToolDS();
ds.Name = "MM2'";
ds.AddArgument(new Variable("q", "seq<int>"));
ds.AddArgument(new Variable("i0", "nat"));
ds.AddArgument(new Variable("min0", "int"));
ds.AddArgument(new Variable("max0", "int"));
ds.AddRetValue(new Variable("i", "nat"));
ds.AddRetValue(new Variable("min", "int"));
ds.AddRetValue(new Variable("max", "int"));
ds.AddPreCond("0 < |q| && min0 == q[0] && max0 == q[0] && i0 == 1");
ds.AddPostCond("Inv(q, i, min, max) && i == |q|");
ds.weakenPreCond("Inv(q, i, min, max)");
ds.weakenPreCond("i > min && max < q");
string name;
name = "MM3";
ds.NewMethod.Name = name;
name = "L3";
ds.WeakLemma.Name = name;
name = "L2";
ds.StrengthLemma.Name = name;
Assert.AreEqual(body, ds.generateBody());
Assert.AreEqual(lemma, ds.generateWeakLemma());
Assert.AreEqual(method, ds.generateMethod());
}
public void WeakenPreCondition()
{
string body = "";
body += indentation + "var i : nat;\n";
body += indentation + "assert 0 < |q|;\n";
body += indentation + "L1(q, i, min, max);\n";
body += indentation + "assert Inv2(q, i, min, max);\n";
body += indentation + "assert Inv3(q, i, min, max);\n";
body += indentation + "i, min, max := MM1(q);\n";
body += indentation + "assert MinElement(min, q);\n";
body += indentation + "assert MaxElement(max, q);\n";
string lemma = "";
lemma += "lemma L1(q: seq<int>, i: nat, min: int, max: int)\n";
lemma += indentation + "requires 0 < |q|\n";
lemma += indentation + "ensures Inv2(q, i, min, max)\n";
lemma += indentation + "ensures Inv3(q, i, min, max)\n";
string method = "";
method += "method MM1(q: seq<int>) returns(i: nat, min: int, max: int)\n";
method += indentation + "requires Inv2(q, i, min, max)\n";
method += indentation + "requires Inv3(q, i, min, max)\n";
method += indentation + "ensures MinElement(min, q)\n";
method += indentation + "ensures MaxElement(max, q)\n";
assertiveToolDS ds = new assertiveToolDS();
ds.Name = "MinAndMax";
ds.AddArgument(new Variable("q", "seq<int>"));
ds.AddLoclVar(new Variable("i", "nat"));
ds.AddRetValue(new Variable("min", "int"));
ds.AddRetValue(new Variable("max", "int"));
ds.AddPreCond("0 < |q|");
ds.AddPostCond("MinElement(min, q)");
ds.AddPostCond("MaxElement(max, q)");
ds.weakenPreCond("Inv2(q, i, min, max)");
ds.weakenPreCond("Inv3(q, i, min, max)");
string name;
name = "MM1";
ds.NewMethod.Name = name;
name = "L1";
ds.WeakLemma.Name = name;
//Console.WriteLine("WeakenPreCondition:");
//Console.WriteLine(body);
//Console.WriteLine(lemma);
//Console.WriteLine(method);
//Console.ReadLine();
Assert.AreEqual(body, ds.generateBody());
Assert.AreEqual(lemma, ds.generateWeakLemma());
Assert.AreEqual(method, ds.generateMethod());
}
private void button_ok_Click(object sender, EventArgs e)
{
try
{
assertiveToolDS dafnyCreate = new assertiveToolDS();
dafnyCreate.Name = p.currentMethod.FullName;
//validation:
if (this.methodName.Text == string.Empty)
{
MessageBox.Show("Please enter Method Name.", "Empty input", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return;
}
if (postLemaName.Text == string.Empty)
{
MessageBox.Show("Please enter Lema name.", "Empty input", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return;
}
bool isFound = false;
foreach (Control x in this.Controls)
{
if (x is TextBox && x.Name.StartsWith("post_cond") && x.Text != String.Empty)
{
isFound = true;
dafnyCreate.strengthenPostCond(x.Text);
}
}
if (!isFound)
{
MessageBox.Show("Please enter at least one postCondition.", "Empty input", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return;
}
// add the new pre_condition and method
dafnyCreate.StrengthLemma.Name = this.postLemaName.Text;
dafnyCreate.NewMethod.Name = this.methodName.Text;
try
{
//vars:
List <String> varNames = p.get_var_names();
List <String> varTypes = p.get_var_types();
for (int i = 0; i < varNames.Count; i++)
{
Variable arg1 = new Variable(varNames[i], varTypes[i]);
dafnyCreate.AddArgument(arg1);
}
//ret:
List <String> retNames = p.get_ret_names();
List <String> retTypes = p.get_ret_types();
for (int i = 0; i < retNames.Count; i++)
{
Variable arg1 = new Variable(retNames[i], retTypes[i]);
dafnyCreate.AddRetValue(arg1);
}
//postcond
List <String> precond = p.get_req();
for (int i = 0; i < precond.Count; i++)
{
dafnyCreate.AddPreCond(precond[i]);
}
//post
List <String> postcond = p.get_ens();
for (int i = 0; i < postcond.Count; i++)
{
dafnyCreate.AddPostCond(postcond[i]);
}
}
catch
{
MessageBox.Show("Error in parsing the file.", "Parser Exeption", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
this.Close();
return;
}
// insert text
toInsert.Insert("{\n" + dafnyCreate.generateBody() + "}\n\n" + dafnyCreate.generateMethod() + "\n\n" + dafnyCreate.generateStrengthLemma() + "\n\n");
this.Close();
}
catch
{
MessageBox.Show("Unexpected Exeption occurred during the execution.", "Unexpected Exeption", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
this.Close();
return;
}
}
private void button_ok_Click(object sender, EventArgs e)
{
try
{
assertiveToolDS dafnyCreate = new assertiveToolDS();
TextDocument activeDoc = null;
DTE dte = null;
try
{
dte = Package.GetGlobalService(typeof(DTE)) as DTE;
activeDoc = dte.ActiveDocument.Object() as TextDocument;
}
catch
{
MessageBox.Show("Please open a Dafny file befor using the aplication.", "File not open", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
this.Close();
return;
}
//get position
var cursPoint = activeDoc.Selection.ActivePoint;
// to insert
TextSelection toInsert = (EnvDTE.TextSelection)(activeDoc.Selection);
//get all text
var text = activeDoc.CreateEditPoint(activeDoc.StartPoint).GetText(activeDoc.EndPoint);
// get input
string name = get_method_name(text, cursPoint);
if (name == String.Empty)
{
MessageBox.Show("Method not found.", "Method not found", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
this.Close();
return;
}
dafnyCreate.Name = name;
//validation:
if (this.methodName.Text == string.Empty)
{
MessageBox.Show("Please enter Method Name.", "Empty input", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return;
}
if (preCondName.Text == string.Empty)
{
MessageBox.Show("Please enter Lema name.", "Empty input", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return;
}
bool isFound = false;
foreach (Control x in this.Controls)
{
if (x is TextBox && x.Name.StartsWith("pre_cond") && x.Text != String.Empty)
{
isFound = true;
dafnyCreate.weakenPreCond(x.Text);
}
}
if (!isFound)
{
MessageBox.Show("Please enter at least one preCondition.", "Empty input", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return;
}
// add the new pre_condition and method
dafnyCreate.WeakLemma.Name = this.preCondName.Text;
dafnyCreate.NewMethod.Name = this.methodName.Text;
// input from parser
try
{
DafnyCodeParser p = new DafnyCodeParser();
p.parse_file(dte.ActiveDocument.FullName, dafnyCreate.Name);
//vars:
List <String> varNames = p.get_var_names();
List <String> varTypes = p.get_var_types();
for (int i = 0; i < varNames.Count; i++)
{
Variable arg1 = new Variable(varNames[i], varTypes[i]);
dafnyCreate.AddArgument(arg1);
}
// returns
List <String> retNames = p.get_ret_names();
List <String> retTypes = p.get_ret_types();
for (int i = 0; i < retNames.Count; i++)
{
Variable arg1 = new Variable(retNames[i], retTypes[i]);
dafnyCreate.AddRetValue(arg1);
}
// preconditions
List <String> precond = p.get_req();
for (int i = 0; i < precond.Count; i++)
{
dafnyCreate.AddPreCond(precond[i]);
}
//post conditions
List <String> postcond = p.get_ens();
for (int i = 0; i < postcond.Count; i++)
{
dafnyCreate.AddPostCond(postcond[i]);
}
}
catch
{
MessageBox.Show("Error in parsing the file.", "Parser Exeption", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
this.Close();
return;
}
// insert text
toInsert.Insert("{\n" + dafnyCreate.generateBody() + "}\n\n" + dafnyCreate.generateMethod() + "\n\n" + dafnyCreate.generateWeakLemma() + "\n\n");
this.Close();
}
catch
{
MessageBox.Show("Unexpected Exeption occurred during the execution.", "Unexpected Exeption", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
this.Close();
return;
}
}