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Show "Click Here to Add a New Item"

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GridView

This is a migrated thread and some comments may be shown as answers.

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answered on 13 Mar 2019, 03:49 PM

telerik_grid.png

I found this "problem" also and came here with a quick search.

I think that this is not a correct behavior as in some of my grids users can enter an empty line, it look-alike empty, but the "False" checkboxes means something in the database. In this case, there is no difference between an empty grid (no rows) and a 1 row grid.

See attached picture.

answered on 14 Mar 2019, 09:23 AM

1017278.gif

1017278.zip

Hello Sebastien,

I have tested with the latest version an a row is not added unless the user enters a value. The attached video shows how I am testing this. Am I doing something wrong? I have attached my test project as well.

I am looking forward to your reply.

Regards,
Dimitar
Progress Telerik

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answered on 14 Mar 2019, 05:13 PM

I modified your project to reproduce, but cannot send it here :(

How to reproduce :

click on the checkbox (checking it)
reclick on the checkbox for unchecking it
click in the textbox (row is created then lostfocus out of the grid)
select the row previously inserted (which has the checkbox checked)

After the step 3, the just inserted (data) row is identical to the Add row (used for inserting new data) which is this my problem.

namespace _1017278

{

partial class RadForm1

{

/// <summary>

/// Required designer variable.

/// </summary>

private System.ComponentModel.IContainer components = null;

/// <summary>

/// Clean up any resources being used.

/// </summary>

/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>

protected override void Dispose(bool disposing)

{

if (disposing && (components != null))

{

components.Dispose();

}

base.Dispose(disposing);

}

#region Windows Form Designer generated code

/// <summary>

/// Required method for Designer support - do not modify

/// the contents of this method with the code editor.

/// </summary>

private void InitializeComponent()

{

Telerik.WinControls.UI.GridViewTextBoxColumn gridViewTextBoxColumn1 = new Telerik.WinControls.UI.GridViewTextBoxColumn();

Telerik.WinControls.UI.GridViewCheckBoxColumn gridViewCheckBoxColumn1 = new Telerik.WinControls.UI.GridViewCheckBoxColumn();

Telerik.WinControls.UI.GridViewDecimalColumn gridViewDecimalColumn1 = new Telerik.WinControls.UI.GridViewDecimalColumn();

Telerik.WinControls.UI.TableViewDefinition tableViewDefinition1 = new Telerik.WinControls.UI.TableViewDefinition();

this.radGridView1 = new Telerik.WinControls.UI.RadGridView();

this.radTextBox1 = new Telerik.WinControls.UI.RadTextBox();

this.button1 = new System.Windows.Forms.Button();

((System.ComponentModel.ISupportInitialize)(this.radGridView1)).BeginInit();

((System.ComponentModel.ISupportInitialize)(this.radGridView1.MasterTemplate)).BeginInit();

((System.ComponentModel.ISupportInitialize)(this.radTextBox1)).BeginInit();

((System.ComponentModel.ISupportInitialize)(this)).BeginInit();

this.SuspendLayout();

//

// radGridView1

//

this.radGridView1.Location = new System.Drawing.Point(325, 127);

//

gridViewTextBoxColumn1.HeaderText = "column1";

gridViewTextBoxColumn1.Name = "columnId";

gridViewTextBoxColumn1.Width = 100;

gridViewCheckBoxColumn1.HeaderText = "column1";

gridViewCheckBoxColumn1.Name = "columnBool";

gridViewCheckBoxColumn1.Width = 66;

gridViewDecimalColumn1.DataType = typeof(int);

gridViewDecimalColumn1.DecimalPlaces = 0;

gridViewDecimalColumn1.HeaderText = "column1";

gridViewDecimalColumn1.Name = "columnInt";

gridViewDecimalColumn1.Width = 51;

this.radGridView1.MasterTemplate.Columns.AddRange(new Telerik.WinControls.UI.GridViewDataColumn[] {

gridViewTextBoxColumn1,

gridViewCheckBoxColumn1,

gridViewDecimalColumn1});

this.radGridView1.MasterTemplate.ViewDefinition = tableViewDefinition1;

this.radGridView1.Name = "radGridView1";

this.radGridView1.Size = new System.Drawing.Size(515, 456);

this.radGridView1.TabIndex = 0;

//

// radTextBox1

//

this.radTextBox1.Location = new System.Drawing.Point(653, 657);

this.radTextBox1.Name = "radTextBox1";

this.radTextBox1.Size = new System.Drawing.Size(100, 20);

this.radTextBox1.TabIndex = 1;

//

// button1

//

this.button1.Location = new System.Drawing.Point(151, 42);

this.button1.Name = "button1";

this.button1.Size = new System.Drawing.Size(75, 23);

this.button1.TabIndex = 2;

this.button1.Text = "button1";

this.button1.UseVisualStyleBackColor = true;

this.button1.Click += new System.EventHandler(this.button1_Click);

//

// RadForm1

//

this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);

this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;

this.ClientSize = new System.Drawing.Size(1013, 764);

this.Controls.Add(this.button1);

this.Controls.Add(this.radTextBox1);

this.Controls.Add(this.radGridView1);

this.Name = "RadForm1";

//

this.RootElement.ApplyShapeToControl = true;

this.Text = "RadForm1";

((System.ComponentModel.ISupportInitialize)(this.radGridView1.MasterTemplate)).EndInit();

((System.ComponentModel.ISupportInitialize)(this.radGridView1)).EndInit();

((System.ComponentModel.ISupportInitialize)(this.radTextBox1)).EndInit();

((System.ComponentModel.ISupportInitialize)(this)).EndInit();

this.ResumeLayout(false);

this.PerformLayout();

}

#endregion

private Telerik.WinControls.UI.RadGridView radGridView1;

private Telerik.WinControls.UI.RadTextBox radTextBox1;

private System.Windows.Forms.Button button1;

}

public partial class RadForm1 : Telerik.WinControls.UI.RadForm

{

public RadForm1()

{

InitializeComponent();

radGridView1.Rows.Clear();

//radGridView1.AddNewRowPosition = Telerik.WinControls.UI.SystemRowPosition.Bottom;

}

private void AddRow(int i)

{

var rowInfo = radGridView1.Rows.AddNew();

rowInfo.Cells["columnId"].Value = Guid.NewGuid();

rowInfo.Cells["columnBool"].Value = true;

rowInfo.Cells["columnInt"].Value = i + DateTime.Now.Second;

}

private void button1_Click(object sender, EventArgs e)

{

radGridView1.Rows.Clear();

for (int i = 0; i < 5; i++)

{

AddRow(i);

}

answered on 15 Mar 2019, 10:53 AM

Hello Sebastien,

Thank you for the code I was able to reproduce this case. Please note that until the user clicks in the checkbox in the new row all values are null, after that the cell will have a value (true/false) and you cannot reset it to null from the UI. Once there is a value in a particular cell the row will be added to the grid. This is desired by design behavior. What you can do is use the grid events and cancel the new row adding for this exact case:

private void RadGridView1_UserAddingRow(object sender, Telerik.WinControls.UI.GridViewRowCancelEventArgs e)

{

var newRow = e.Rows[0] as GridViewNewRowInfo;

if (newRow.Cells[0].Value == null && (bool)newRow.Cells[1].Value == false && newRow.Cells[2].Value == null)

{

e.Cancel = true;

radGridView1.MasterView.TableAddNewRow.CancelAddNewRow();

}

I hope this will be useful. Let me know if you have additional questions.

Regards,
Dimitar
Progress Telerik

Get quickly onboard and successful with your Telerik and/or Kendo UI products with the Virtual Classroom free technical training, available to all active customers. Learn More.

answered on 15 Mar 2019, 01:25 PM

Hi Dimitar,

I am using the UserAddingRole already for inserting into our special data objects.

I don't want to cancel it because for us the row is valid; we insert a row in our data object.

Our problem with the grid is that this inserted line is identical to the AddRow when the grid contains any row. The user won't be able to differentiate between an empty grid and a grid with one empty row.

Why not having the "Click Here to Add a New Item" shown when the grid is empty, so at all time?

We think its a design flaw since the behavior is different from a "dumb & stupid" user's point of view.

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Show "Click Here to Add a New Item"

8 Answers, 1 is accepted