The variable 'crystalReportViewer1' is either undeclared or was never assigned.

Question

namespace POSBunifu
{
    partial class frmInvoice
    {

        private System.ComponentModel.IContainer components = null;

        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);

        }

        #region Windows Form Designer generated code

        private void InitializeComponent()
        {
            this.crystalReportViewer1 = new CrystalDecisions.Windows.Forms.CrystalReportViewer();
            this.SuspendLayout();

            this.crystalReportViewer1.ActiveViewIndex = -1;
            this.crystalReportViewer1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
            this.crystalReportViewer1.Cursor = System.Windows.Forms.Cursors.Default;
            this.crystalReportViewer1.Dock = System.Windows.Forms.DockStyle.Fill;
            this.crystalReportViewer1.Location = new System.Drawing.Point(0, 0);
            this.crystalReportViewer1.Name = "crystalReportViewer1";
            this.crystalReportViewer1.SelectionFormula = "";
            this.crystalReportViewer1.ShowCloseButton = false;
            this.crystalReportViewer1.ShowExportButton = false;
            this.crystalReportViewer1.ShowGotoPageButton = false;
            this.crystalReportViewer1.ShowGroupTreeButton = false;
            this.crystalReportViewer1.ShowPageNavigateButtons = false;
            this.crystalReportViewer1.ShowRefreshButton = false;
            this.crystalReportViewer1.ShowTextSearchButton = false;
            this.crystalReportViewer1.Size = new System.Drawing.Size(819, 486);
            this.crystalReportViewer1.TabIndex = 1;
            this.crystalReportViewer1.ToolPanelView = CrystalDecisions.Windows.Forms.ToolPanelViewType.None;
            this.crystalReportViewer1.ViewTimeSelectionFormula = "";

            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(819, 486);
            this.Controls.Add(this.crystalReportViewer1);
            this.Name = "frmInvoice";
            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
            this.Text = "Receipt";
            this.Load += new System.EventHandler(this.frmInvoice_Load);
            this.ResumeLayout(false);

        }

        #endregion

        private CrystalDecisions.Windows.Forms.CrystalReportViewer crystalReportViewer1;
    }
}

Error shows on this line > this.Controls.Add(this.crystalReportViewer1);

Answer 1

The code looks fine, but the problem does exist, and I can reproduce it.

But when I replace this control with any other control, the problem disappears.

I'm not sure if it is the designer's problem or some code inside this control that caused this problem. Check the similar problems in these links first to see if someone's solution is right for you.

The variable 'control' is either undeclared or was never assigned - Except it is, and the application compiles

The variable '<control_name>' is either undeclared or was never assigned.

The variable 'variable_name' is either undeclared or was never assigned

If nothing works, please describe what you want to use this control to achieve, and then we can try to use other alternative controls to do it.

This package has not been updated since 2014. Even if we find some problems with this package, we cannot get the update anymore.

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