在设计时设置的Listview列宽在运行时不使用

Question

I've defined column widths manually by dragging column borders in a listview control at design time but at run time all the columns appear with the same width.

Code in InitialiseComponent is

// 
        // lstLicenses
        // 
        this.lstLicenses.Columns.AddRange(new System.Windows.Forms.ColumnHeader[] {
        this.Company,
        this.ExpiryDate,
        this.MaxUsers,
        this.Key});
        this.lstLicenses.Location = new System.Drawing.Point(465, 46);
        this.lstLicenses.MultiSelect = false;
        this.lstLicenses.Name = "lstLicenses";
        this.lstLicenses.Size = new System.Drawing.Size(565, 228);
        this.lstLicenses.TabIndex = 18;
        this.lstLicenses.UseCompatibleStateImageBehavior = false;
        this.lstLicenses.View = System.Windows.Forms.View.Details;`

` It seems as though the design time column width information isn't getting stored. Workaround is to define column widths manually after load as shown below but this shouldn't be necessary.

string queryString = "SELECT * FROM dbo.Licenses";
                SqlDataAdapter adapter = new SqlDataAdapter(queryString, sEnv);

                DataSet Licenses = new DataSet();
                adapter.Fill(Licenses, "Licenses");
                int iLicensesRows = Licenses.Tables[0].Rows.Count;
                foreach (DataRow row in Licenses.Tables[0].Rows)
                {
                ListViewItem LVI = lstLicenses.Items.Add(row["Company"].ToString());
                LVI.SubItems.Add(row["ExpiryDate"].ToString());
                LVI.SubItems.Add(row["MaxUsers"].ToString());
                LVI.SubItems.Add(row["Key"].ToString());
                }
                lstLicenses.Columns[0].Width = 100;
                lstLicenses.Columns[1].Width = 130;
                lstLicenses.Columns[2].Width = 85;
                lstLicenses.Columns[3].Width = 225;

Can anyone tell me how to get the design time column widths to be used at run time?

Answer 1

Problem : you are setting the widths of your ListView columns onceagain manually by following Statements:

                lstLicenses.Columns[0].Width = 100;
                lstLicenses.Columns[1].Width = 130;
                lstLicenses.Columns[2].Width = 85;
                lstLicenses.Columns[3].Width = 225;

the above statements override your designtime Widths .so finally your ListView Column widths are set based on above statements.

Solution you should comment/remove the above statements to get the Widths which are set at designtime .

Comlete Solution:

            string queryString = "SELECT * FROM dbo.Licenses";
            SqlDataAdapter adapter = new SqlDataAdapter(queryString, sEnv);

            DataSet Licenses = new DataSet();
            adapter.Fill(Licenses, "Licenses");
            int iLicensesRows = Licenses.Tables[0].Rows.Count;
            foreach (DataRow row in Licenses.Tables[0].Rows)
            {
            ListViewItem LVI = lstLicenses.Items.Add(row["Company"].ToString());
            LVI.SubItems.Add(row["ExpiryDate"].ToString());
            LVI.SubItems.Add(row["MaxUsers"].ToString());
            LVI.SubItems.Add(row["Key"].ToString());
            }

           //Comment or remove the below statements to get design time widths.

           /*lstLicenses.Columns[0].Width = 100;
            lstLicenses.Columns[1].Width = 130;
            lstLicenses.Columns[2].Width = 85;
            lstLicenses.Columns[3].Width = 225; */