Discussion :

[mihaispr]

Sur ma forme j'ai ca:



http://www.java2s.com/Tutorial/CShar...Textlength.htm



Le code:

Code :

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using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
 
public class ErrorForm : System.Windows.Forms.Form
{
    private System.Windows.Forms.Label label1;
    private System.Windows.Forms.Button btnValidate;
    private System.Windows.Forms.ErrorProvider errorProvider1;
    private System.Windows.Forms.TextBox txtInput;
 
    public ErrorForm() - erreur ici!
    {
        InitializeComponent();
    }
 
    protected override void Dispose(bool disposing)
    {
        if (disposing)
        {
            if (components != null)
            {
                components.Dispose();
            }
        }
        base.Dispose(disposing);
    }
 
    private void InitializeComponent()
    {
        this.components = new System.ComponentModel.Container();
        this.errorProvider1 = new System.Windows.Forms.ErrorProvider(this.components);
        this.label1 = new System.Windows.Forms.Label();
        this.txtInput = new System.Windows.Forms.TextBox();
        this.btnValidate = new System.Windows.Forms.Button();
        ((System.ComponentModel.ISupportInitialize)(this.errorProvider1)).BeginInit();
        this.SuspendLayout();
        // 
        // errorProvider1
        // 
        this.errorProvider1.BlinkRate = 500;
        this.errorProvider1.BlinkStyle = System.Windows.Forms.ErrorBlinkStyle.AlwaysBlink;
        this.errorProvider1.ContainerControl = this;
        // 
        // label1
        // 
        this.label1.Font = new System.Drawing.Font("Arial Black", 12F);
        this.label1.Location = new System.Drawing.Point(8, 8);
        this.label1.Name = "label1";
        this.label1.Size = new System.Drawing.Size(376, 56);
        this.label1.TabIndex = 2;
        this.label1.Text = "The following text box only allows 5 characters.  Try to enter more...";
        // 
        // txtInput
        // 
        this.txtInput.Location = new System.Drawing.Point(144, 80);
        this.txtInput.Name = "txtInput";
        this.txtInput.Size = new System.Drawing.Size(120, 20);
        this.txtInput.TabIndex = 0;
        this.txtInput.Validating += new System.ComponentModel.CancelEventHandler(this.txtInput_Validating);
        // 
        // btnValidate
        // 
        this.btnValidate.Location = new System.Drawing.Point(16, 72);
        this.btnValidate.Name = "btnValidate";
        this.btnValidate.Size = new System.Drawing.Size(112, 32);
        this.btnValidate.TabIndex = 1;
        this.btnValidate.Text = "OK";
        // 
        // ErrorForm
        // 
        this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
        this.ClientSize = new System.Drawing.Size(400, 125);
        this.Controls.Add(this.label1);
        this.Controls.Add(this.btnValidate);
        this.Controls.Add(this.txtInput);
        this.Name = "ErrorForm";
        this.Text = "Error Trapper";
        ((System.ComponentModel.ISupportInitialize)(this.errorProvider1)).EndInit();
        this.ResumeLayout(false);
        this.PerformLayout();
 
    }
 
    [STAThread]
    static void Main() -erreur ici!!!
    {
        Application.Run(new Form1());
    }
 
    private void txtInput_Validating(object sender, System.ComponentModel.CancelEventArgs e)
    {
        // Check if the text length is greater than 5.
        if (txtInput.Text.Length > 5)
        {
            errorProvider1.SetError(txtInput, "Can't be greater than 5!");
        }
        else
            errorProvider1.SetError(txtInput, "");
    }
 
    private IContainer components;
}

J'ai les 2 erreurs d'ici:



Comment je dois modifier le code pour que les 2 erreurs disparaissent?

[laedit]

Tu as deux méthodes Main() qui définissent un point d'entrée de l'application.
Or tu ne dois en avoir qu'un seul. Regarde d'où proviennent ces méthodes et ce qu'elles font, l'une d'entre elle doit créer ton formulaire principale.
Il faudra que tu modifie l'autre en la renommant ou en la supprimant.